Articles de revues : « Dioscorus »

1

MacCoull, Leslie S. B. « Missing Pieces of the Dioscorus Archive ». Chronique d'Egypte 65, n^o 129 (janvier 1990) : 107–10. http://dx.doi.org/10.1484/j.cde.2.308829.

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Movellán Luis, Mireia. « La leyenda troyana en la Antigüedad Tardía. Una aproximación a los poemas de Dioscoro de Afrodito = The Trojan Legend in Late Antiquity. An Approach to the Poetry of Dioscorus of Aphrodito ». Espacio Tiempo y Forma. Serie II, Historia Antigua, n^o 30 (3 décembre 2017) : 255. http://dx.doi.org/10.5944/etfii.30.2017.19869.

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La leyenda troyana se configura como relato literario a lo largo de la Antigüedad expandiendo y modificando los diferentes episodios que la componen. El estudio de la utilización de la leyenda en los poemas conservados del puño y letra de Dioscoro de Afrodito, autor del siglo VI, nos permiten aproximarnos a la evolución y configuración del canon troyano, así como a las obras clásicas todavía disponibles en su época y al resto de fuentes que le sirvieron como modelo para sus composiciones.The Trojan legend becomes a literary narrative throughout Antiquity expanding and modifying its different episodes. The study of this legend in Dioscorus of Aphrodito’s autograph poems (from 6th century BC), allows us to grasp the evolution and configuration of the Trojan canon, the classical works still available in his time, and other sources used as a model for his compositions.

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Fournet, Jean-Luc. « Trois nouveaux reçus d’annone civile transportée par le monastère de la Métanoia (Égypte, vie siècle) ». Journal of Juristic Papyrology, n^o 50 (2 août 2021) : 109–47. http://dx.doi.org/10.36389/uw.jjurp.50.2020.pp.109-147.

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Edition of three sixth-century shipping receipts for the annona civilis transported by the Monastery of the Metanoia (near Canopus). Two of them belong to the Dioscorus archive. The appendix proposes a revision of the other shipping receipts involving the Metanoia – one from the Monastery of Sabinos, the other ones from Aphrodite.

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Hanafi, Alia. « A New Fragment from the Archive of Dioscorus ». Bulletin of the Center Papyrological Studies 4, n^o 1 (1 décembre 1987) : 78. http://dx.doi.org/10.21608/bcps.1987.67603.

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Constantelos, Demetrios J., et Leslie S. B. MacCoull. « Dioscorus of Aphrodito : His Work and His World ». Classical World 83, n^o 4 (1990) : 372. http://dx.doi.org/10.2307/4350656.

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Amory, Yasmine, et Joanne Vera Stolk. « A Coptic letter to Dioscorus of Aphrodite from the collection of the Ghent University Library ». Chronique d'Egypte 96, n^o 191 (janvier 2021) : 147–53. http://dx.doi.org/10.1484/j.cde.5.128175.

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O'Sullivan, Neil. « The Future Optative in Greek Documentary and Grammatical Papyri ». Journal of Hellenic Studies 133 (2013) : 93–111. http://dx.doi.org/10.1017/s0075426913000062.

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AbstractThe neglected area of later Greek syntax is explored here with reference to the future optative. This form of the verb first appeared early in the classical age but virtually disappeared during the Hellenistic era. Under the influence of Atticism it reappeared in later literary texts, and this paper is concerned largely with its revival in late legal and epistolary texts on papyrus from Egypt. It is used mainly in set legal phrases of remote future conditions, but we also see it in letters to express wishes (again, largely formulaic) for the future, both of which uses are foreign to Attic Greek. Finally, the future optative's appearance in conjugations on grammatical papyri from Egypt is used to demonstrate the form's presence in education even at the end of the classical world there, with the archive of Dioscorus of Aphrodito uniquely showing both this theoretical knowledge of it and examples of its application in legal documents.

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Chabi, Kolawole. « Augustin et les écoles philosophiques antiques dans sa Lettre 118 à Dioscorus. Une analyse des paragraphes 12–34 ». Isidorianum 32, n^o 1 (1 juin 2023) : 153–90. http://dx.doi.org/10.46543/isid.2332.1008.

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Sommaire : Augustin est connu pour son esprit de service qui le porte à produire des écrits en réponse aux requêtes d’amis, de connaissances ou même de personnes étrangères qui sollicitent son aide. En 410, il reçoit une lettre (ep. 117) de Carthage, de la part de Dioscorus, jeune homme d’origine grecque, qui lui envoie de nombreuses questions sur les dialogues de Cicéron. Sa recherche est motivée par la crainte de paraître ignorant devant ceux qui lui poseraient des questions sur ces sujets de retour dans sa patrie. Augustin saisit l’occasion pour le détourner des ambitions de la vaine gloire et lui montre, en exposant sa connaissance des écoles philosophiques antiques, qu’il ne sert à rien de s’imbiber des opinions des philosophes quand on ne recherche pas dans l’humilité la vérité elle-même. Cet article présente et analyse l’exposé d’Augustin des théories et des contradictions de ces philosophies antiques, et montre les recours aux références bibliques presque inaperçues présentes dans la lettre.

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Кожухов, С. « Religious Policy and Theological Content of the Imperial Letters : «Encyclicals» by Basiliscus, «Enotikon» by Zinon and «Tipos» by Anastasius I Part 1 ». Theological Herald, n^o 3(46) (15 novembre 2022) : 119–33. http://dx.doi.org/10.31802/gb.2022.46.3.006.

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В данном исследовании рассматривается церковная политика императора Василиска (475–476) и предлагается богословский анализ его указа под названием «Энциклика», которая стала первым официальным имперским документом, направленным против Халкидонского Собора (451) и его учения о двух природах во Христе после воплощения. «Энциклика» ставит Халкидонский Собор вне церковной традиции, противопоставляя его трём предыдущим Вселенским Соборам. На этом фоне даётся анализ седьмого правила Ефесского Собора (431), позиции Диоскора Александрийского и сопутствующих исторических событий. This study examines the church policy of Emperor Basilisk (475–476) and offers a theological analysis of his decree entitled «Encyclical», which became the first official imperial document directed against the Council of Chalcedon (451) and his doctrine of the two natures in Christ after the incarnation. The «Encyclical» places the Council of Chalcedon outside the church tradition, contrasting it with the Three previous Ecumenical Councils. Against this background, the analysis of the seventh rule of the Council of Ephesus (431), the position of Dioscorus of Alexandria and the accompanying historical events is given.

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Constantinou, Maria. « I. The Threefold Summons at Late Antique Church Councils ». Zeitschrift der Savigny-Stiftung für Rechtsgeschichte : Kanonistische Abteilung 107, n^o 1 (1 juin 2021) : 1–47. http://dx.doi.org/10.1515/zrgk-2021-0001.

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Abstract The threefold summons of an absent defendant in the context of synodal proceedings – which had been admittedly formed by influence from the respective process in Roman law – is an important component of the ecclesiastical judicial procedure. In this paper I examine in detail all the extensive narratives of threefold summonses preserved in conciliar acts of the fifth and sixth centuries, that is, the cases of Nestorius of Constantinople and John of Antioch at the council of Ephesus (431), the case of the archimandrite Eutyches at the Resident Synod of Constantinople (448), the case of Athanasius of Perrhe at the local synods of Hierapolis (early 440s) and Antioch (445) as well as at the Council of Chalcedon (451), the case of Dioscorus of Alexandria at the Council of Chalcedon, and the case of Anthimus of Constantinople at the Resident Synod of Constantinople (536). In the final part I proceed to an assessment of this process’ evolution over the period in question. The principal conclusion is that by the time of Justinian the ecclesiastical threefold summons procedure had become consolidated and systematised.

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CORCORAN, SIMON. « ROMAN LAW AND THE TWO LANGUAGES IN JUSTINIAN'S EMPIRE ». Bulletin of the Institute of Classical Studies 60, n^o 1 (1 juin 2017) : 96–116. http://dx.doi.org/10.1111/2041-5370.12049.

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Abstract This paper, reflecting Fergus Millar's work on linguistic and cultural diversity in the Roman empire, surveys the evolving relationship of Latin and Greek as languages for Roman law. Normative texts remained predominantly Latin until the completion of Justinian's codification (534), even though that was a genuinely bilingual product. However, following the already existing pattern in the Greek east, a vast corpus of Greek materials was then quickly created to teach the codification in the official law schools. Designed to aid engagement with the source-texts, these ended up superseding them. Roman legal Greek, a mixture of Latin terminology plus standardized Greek vocabulary, became stabilized. After 534, new legislation was most often in Greek, necessitating parallel Latin materials to help Latin-speaking students, although sixth-century collections of Novels (‘new laws’) were still bilingual. In practice, however, in most of Justinian's empire, a lawyer (such as Dioscorus of Aphrodito) could function with limited Latin. Soon Roman law would bifurcate into two monolingual traditions, Greek in the east, Latin in the west.

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Gwynn, David M. « DIOSCORUS OF ALEXANDRIA REVISITED - (V.L.) Menze Patriarch Dioscorus of Alexandria. The Last Pharaoh and Ecclesiastical Politics in the Later Roman Empire. Pp. xii + 226. Oxford : Oxford University Press, 2023. Cased, £70, US$90. ISBN : 978-0-19-287133-6. » Classical Review 74, n^o 1 (15 janvier 2024) : 216–18. http://dx.doi.org/10.1017/s0009840x23002810.

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Huebner, Sabine. « Soter, Sotas, and Dioscorus before the Governor : The First Authentic Court Record of a Roman Trial of Christians ? » Journal of Late Antiquity 12, n^o 1 (2019) : 2–24. http://dx.doi.org/10.1353/jla.2019.0002.

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Otegbayo, Bolanle Omolara, Abiola Rebecca Tanimola, Julien Ricci et Olivier Gibert. « Thermal Properties and Dynamic Rheological Characterization of Dioscorea Starch Gels ». Gels 10, n^o 1 (10 janvier 2024) : 51. http://dx.doi.org/10.3390/gels10010051.

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Yam (Dioscorea. sp.) is an edible starchy tuber with potential for being a commercial source of starch for industrial purposes, but yam starch is underutilized. The dynamic oscillatory and thermal properties of yam starches from sixteen varieties each of Dioscorea. rotundata, Dioscora. alata, Dioscorea. bulbifera and one variety of Dioscorea. dumetorum from Nigeria were studied to determine their potential for industrial utilization. The storage modulus, loss modulus, damping factor and complex viscosity as a function of frequency (ω) of the dioscorea gels, as well as the onset temperature (To), peak gelatinization temperature (Tp), end of gelatinization (TC), and gelatinization enthalpy of the starches were determined by standard procedures. Results showed that all the dioscorea starches showed a typical elastic behavior with the magnitude of G′ greater than G″ while tan δ < 1 in all varieties. Thus, the starch gels were more elastic than viscous. All the starch gels exhibited shear thinning characteristics and showed frequency (ω) independence characteristics of weak gels. D. rotundata varieties had the lowest ∆Hgel, while D. bulbifera varieties had the highest. The diversity of the visco-elastic and thermal properties of the yam starch gels from different varieties and species can be an advantage in their utilization in both food and non-food industries.

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Ohme, Heinz. « Was war die Lateransynode von 649 ? Was sollte sie sein ? » Annuarium Historiae Conciliorum 48, n^o 1 (20 juin 2018) : 109–57. http://dx.doi.org/10.30965/25890433-04801007.

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The radical nature of the Lateran Synod of 649 – which anathematized three patriarchs from Constantinople, one from Alexandria, two imperial laws, and one bishop identified as the heresiarch – was unprecedented in the history of the church. Hence the Synod represents the high point of the Monothelete controversy. This article analyzes its acts in order to identify the kind of synod which the Lateran gathering understood itself to be, thereby demonstrating that this papal synod, the most important of the early middle ages, constituted itself as a court of justice and pretended to go through a so-called synodal accusatory legal process. Patterning their proceedings after the example of the fifth-century lawsuit against Eutyches, Nestorius and Dioscorus, the gathering claimed to be following, in a canonically faithful manner, the standing synodal legal procedure according to the church’s statues. However, the examination of the actual trial reveals serious breaches of legal procedure. The mandatory summons of the accused was omitted, thereby taking away any possibility of their defense. Moreover, the absolute separation of prosecutor and judge was undermined and, because they were written beforehand, not only the record of the process but also its judgement were a farce. Relying on a theology of Roman primacy, the synod posited a Roman competence which challenged the actual authority of an ecumenical council convened by the emperor. In this respect, here is the first early medieval attempt to replace the institution of the ecumenical council with a papally led Concilium universale. Conceptionally organized by Maximus the Confessor with Popes Theodorus I and Martin I, and staged as a literary product by him and his students, the Lateran Synod was, according to canonical and imperial law, an illegal event which rendered any agreement in the theological controversy impossible.

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Magnelli, Enrico. « Colluthus' ‘Homeric’ Epyllion ». Ramus 37, n^o 1-2 (2008) : 151–72. http://dx.doi.org/10.1017/s0048671x00004951.

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Poetaster, plagiarist, parrot, and so on. During the last two centuries, Colluthus has been widely reputed an utterly bad poet by both amateur readers and professional scholars: his reputation is not much better than that once enjoyed by, say, Eudocia or Dioscorus of Aphrodito. It is therefore unsurprising that the literary features of his poem have won very little attention from the res publica philologorum. Efforts have been made to emend its (very badly transmitted) text, and much ingenuity has been devoted to the study of its sources and its diction; but few scholars have tried to analyse the Rape of Helen as a literary work. The present paper hopes to be a first step towards such a goal. Let me say from the very beginning that I am not concerned at all with Colluthus' inspiration, skill or the quality of his poetry. This is not what I mean by speaking of a ‘revaluation’ of our poem. Nor am I trying to follow in the steps of Giangrande, who once made a sustained effort to demonstrate that Colluthus was fond of learned allusion in an almost Alexandrian way—Giangrande rightly pointed to Colluthus' irony, but his interpretations of single passages and phrases were for the most part ill-founded, and it was quite easy for Livrea, in a spirited reply to Giangrande, to dispose of them. My concern is a simple one: what was the aim of the Rape of Helen? Are there any ‘signs of life’ in those 394 hexameters—to put it in other words: are we sure that Colluthus aimed at a slavish rewriting of the story of Paris and Helen with the bare addition of some Nonnian flavour, or rather may we suppose that his poetical project was slightly more ambitious?

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Lin, Pei-Lan, Kuo-Wei Lin, Ching-Feng Weng et Kuo-Chih Lin. « Yam Storage Protein Dioscorins from Dioscorea alata and Dioscorea japonica Exhibit Distinct Immunomodulatory Activities in Mice ». Journal of Agricultural and Food Chemistry 57, n^o 11 (10 juin 2009) : 4606–13. http://dx.doi.org/10.1021/jf8038499.

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Nagai, Takeshi, et Toshio Nagashima. « Functional Properties of Dioscorin, a Soluble Viscous Protein from Japanese Yam (Dioscorea opposita Thunb.) Tuber Mucilage Tororo ». Zeitschrift für Naturforschung C 61, n^o 11-12 (1 décembre 2006) : 792–98. http://dx.doi.org/10.1515/znc-2006-11-1204.

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Abstract A soluble viscous protein was purified from yam (Dioscorea opposita Thunb.) tuber mucilage tororo by chromatographic steps, and its functional properties were estimated. The purified dioscorin having the molecular weight of about 200 kDa exhibited high scavenging activities against hydroxyl radicals (IC50 = 195.1 μg/ml) and superoxide anion radicals (IC50 = 92.7 μg/ml). Moreover, it showed extremely high angiotensin I-converting enzyme inhibitory activity (IC50 = 41.1 μg/ml). The results suggested that yam D. opposita tuber has a wide spectrum of strong antioxidative and antihypertensive activities and it could be utilized as a source of natural antioxidant.

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Вишняк, Михаил Андреевич. « The Theological Dialogue Between the Orthodox and the Non-Chalcedonians (Past - Present - Future) : An Athonite Critique. Part 2 : Introduction, ch. 1, nn. 4-9 ; ch. 2 ». Библия и христианская древность, n^o 3(3) (15 octobre 2019) : 99–139. http://dx.doi.org/10.31802/2658-4476-2019-3-3-99-139.

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Вниманию русскоязычного читателя предлагается вторая часть перевода с новогреческого на русский язык книги Ὁ Θεολογικός Διάλογος Ὀρθοδόξων καί Ἀντιχαλκηδονίων (παρελθόν - παρόν - μέλλον): Μία ἁγιορειτική συμβολή. Ἅγιον Ὄρος: Ἱερά Μονή Ὁσίου Γρηγορίου, 2018 (841 σ.). Это издание посвящено богословскому диалогу между Православной Церковью и антихалкидонитами и включает в себя все тексты соответствующей тематики, составленные на Святой Горе Афон в период 1991-2015 гг. Настоящая публикация включает в себя перевод части введения (гл. 1, п. 4-9; гл. 2). Продолжение первой главы посвящено истории официального богословского диалога между православными и антихалкидонитами. Затрагиваются основные проблемы диалога - вопросы о православии Диоскора и Севира и о снятии анафем. Вторая глава введения посвящена вопросу о возобновлении диалога. Рассмотрены новые взгляды и теории, которые возникли после окончания официального диалога (в частности, теория “миафизитства”) и должны быть приняты во внимание в случае его возобновления. The Russian-speaking reader is presented with the second part of the translation into Russian from the modern Greek of the book Ὁ Θεολογικός Διάλογος Ὀρθοδόξων καί Ἀντιχαλκηδονίων (παρελθόν - παρόν - μέλλον): Μία ἁγιορειτική συμβολή. Ἅγιον Ὄρος: Ἱερά Μονή Ὁσίου Γρηγορίου, 2018 (841 p.). This edition is devoted to the Theological Dialogue between the Orthodox Church and the non-Chalcedonians and includes all texts of the relevant topics, published on the Holy Mount Athos in the period 1991-2015. This publication includes a translation of a part of the Introduction (Chapter 1, paragraphs 4-9, and Chapter 2). The continuation of Chapter 1 is devoted to the history of the official Theological Dialogue between Orthodox and antiChalcedonians. The main problems of dialogue are touched upon - questions about orthodoxy of Dioscorus and Severus of Antioch and the lifting of anathemas. Chapter 2 of the Introduction is devoted to the resumption of the Dialogue. It considers new views and theories that arose after the end of the official Dialogue (in particular, the theory of “miaphysitism”) and should be taken into account if it is resumed.

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Kamimura, Naoki. « La relación de identidad de los cristianos del norte de África con la ejercitación espiritual, en las cartas de Agustín ». Augustinus 64, n^o 1 (2019) : 153–72. http://dx.doi.org/10.5840/augustinus201964252/25310.

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In contributing to the debate on the transformation of late Roman world, some scholars have claimed that the boundaries between religious groups were fluid with external and internal factors. Christian identity was not characterised by clear indications of religious belief, observance, and practice. Some intriguing surveys have shown that the difference between Christians and pagans can be seen as part of a discursive binary. While the North African evidence of their identity allows us to consider the question of what it means to be a Christian, it is noteworthy that there is a comprehensive framework for the understanding of human behavior and thought: the ‘spiritual exercises’ in the Greco-Roman tradition. In the fourth and fifth centuries, Christian thinkers began to pursue the matter in question as being linked with the context of his concern for Christianness in late North Africa, the correlation still remains in question. In this article, therefore, first I examine how he referred to the Christian code of behavior in his letters. In particular, focusing my attention on epistolary correspondence of Augustine with two seemingly ‘pagans’, I show how he tried to impose the idea of ehe Christian norms of behavior on his correspondence –with Dioscorus (epp. 117 and 118) and with Volusianus (epp. 132, 135, and 137). Then I ask what Augustine understood by spiritual training. For the sake of clarity, I have divided the letters along he thematic line into three groups –the intellectual and therapeutic (ep. 26, 37, 56, 102, 162, 193, 202A, and 2*), the religious and eschatological (ep. 92, 130, 131, 137, and 157), and the exegetical aspect (ep. 28, 137, 149, 199, and 213). In each group I consider them chronologically as far as possible. Finally, I consider the principal feature of spiritual training, thereby coming to the enhancement of spiritual affinities, and mutual relationships of which he made use in speaking about Christian identity.

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Вишняк, Михаил Андреевич. « The Theological Dialogue Between the Orthodox and the Non-Chalcedonians (Past - Present - Future) : An Athonite Critique. Part 2 : Introduction, ch. 1, nn. 4-9 ; ch. 2 ». Библия и христианская древность, n^o 3(3) (15 octobre 2019) : 99–139. http://dx.doi.org/10.31802/2658-4476-2019-3-3-99-139.

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Вниманию русскоязычного читателя предлагается вторая часть перевода с новогреческого на русский язык книги Ὁ Θεολογικός Διάλογος Ὀρθοδόξων καί Ἀντιχαλκηδονίων (παρελθόν - παρόν - μέλλον): Μία ἁγιορειτική συμβολή. Ἅγιον Ὄρος: Ἱερά Μονή Ὁσίου Γρηγορίου, 2018 (841 σ.). Это издание посвящено богословскому диалогу между Православной Церковью и антихалкидонитами и включает в себя все тексты соответствующей тематики, составленные на Святой Горе Афон в период 1991-2015 гг. Настоящая публикация включает в себя перевод части введения (гл. 1, п. 4-9; гл. 2). Продолжение первой главы посвящено истории официального богословского диалога между православными и антихалкидонитами. Затрагиваются основные проблемы диалога - вопросы о православии Диоскора и Севира и о снятии анафем. Вторая глава введения посвящена вопросу о возобновлении диалога. Рассмотрены новые взгляды и теории, которые возникли после окончания официального диалога (в частности, теория “миафизитства”) и должны быть приняты во внимание в случае его возобновления. The Russian-speaking reader is presented with the second part of the translation into Russian from the modern Greek of the book Ὁ Θεολογικός Διάλογος Ὀρθοδόξων καί Ἀντιχαλκηδονίων (παρελθόν - παρόν - μέλλον): Μία ἁγιορειτική συμβολή. Ἅγιον Ὄρος: Ἱερά Μονή Ὁσίου Γρηγορίου, 2018 (841 p.). This edition is devoted to the Theological Dialogue between the Orthodox Church and the non-Chalcedonians and includes all texts of the relevant topics, published on the Holy Mount Athos in the period 1991-2015. This publication includes a translation of a part of the Introduction (Chapter 1, paragraphs 4-9, and Chapter 2). The continuation of Chapter 1 is devoted to the history of the official Theological Dialogue between Orthodox and antiChalcedonians. The main problems of dialogue are touched upon - questions about orthodoxy of Dioscorus and Severus of Antioch and the lifting of anathemas. Chapter 2 of the Introduction is devoted to the resumption of the Dialogue. It considers new views and theories that arose after the end of the official Dialogue (in particular, the theory of “miaphysitism”) and should be taken into account if it is resumed.

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Makiyah, Sri Nabawiyati Nurul, Sherly Usman et Ahmad Hafidul Ahkam. « Molecular Docking Investigation of Dioscorea alata Compounds Binding to CCKBR, CHRM3, CHRM5, and H2R for Gastric Ulcer Treatment ». Trends in Sciences 21, n^o 5 (10 mars 2023) : 7358. http://dx.doi.org/10.48048/tis.2024.7358.

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Gastric ulcer is a pathological condition characterized by damage to the mucosal and submucosal tissue layers of the stomach. The main proteins targeted in the treatment of gastric ulcers are CCKBR, CHRM3, CHRM5, and H2R because of their roles in the regulation of gastric acid secretion. Dioscorea alata (DA) is known to contain various active compounds with high sapogenin, diosgenin, and dioscorin content, in addition to its carbohydrate content. We investigated the potential of DA compounds to bind to these proteins in silico. Compound and protein structures were retrieved from PubChem (https://pubchem.ncbi.nlm.nih.gov), ChemSpider (http://www.chemspider.com), and the RCSB PDB (https://rcsb.org). Proteins and compounds are prepared first, and then docked to obtain the interactions that might form, and finally visualized to observe the interactions that have been constructed. The results showed that diosgenin and prosapogenin have potential as inhibitors of CCKBR and CHRM5, and diosgenin and dimethyl batatasin IV have potential as inhibitors of CHRM3 and H2R. We conclude that diosgenin, prosapogenin, and dimethyl batatasin IV in DA compounds have the potential to inhibit CCKBR, CHRM3, CHRM5, and H2R for gastric ulcer treatment. It is necessary to further study the effect of Dioscorea alata in vitro through a gastric ulcer model study. HIGHLIGHTS Dioscorea alata (DA) is known to contain various active compounds with high sapogenin, diosgenin, and dioscorin content in addition to its carbohydrate content Gastritis (gastric ulcer) is a pathological condition characterized by damage to the mucosal and sub-mucosal tissue layers of the stomach. The main proteins targeted in the treatment of gastric ulcers are CCKBR, CHRM3, CHRM5, and H2R because of their roles in the regulation of gastric acid secretion We performed an in-silico study to investigate the potential of DA compounds to inhibit these proteins. Compound and protein structures were retrieved from PubChem, ChemSpider, and the RCSB PDB. Proteins were prepared with Swiss PDB viewer v. 4.10. Compounds were prepared with Open Babel in Cytoscape v.3.9.1. Docking was done with AutoDock Vina in PyRx v.0.9.7. Visualization was done with Discovery Studio v. 19.1 We determined that several DA compounds have the potential to act as inhibitors of CCKBR, CHRM3, CHRM5, and H2R by reviewing the predicted binding energy, competitive properties based on literature studies and the bioactivity and molecular docking analysis. The results of this study are expected to be the basis for further gastric ulcer treatment research GRAPHICAL ABSTRACT

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Hou, Wen-Chi, Mei-Hsien Lee, Hsien-Jung Chen, Wen-Lee Liang, Chuan-Hsiao Han, Yen-Wenn Liu et Yaw-Huei Lin. « Antioxidant Activities of Dioscorin, the Storage Protein of Yam (Dioscorea batatasDecne) Tuber ». Journal of Agricultural and Food Chemistry 49, n^o 10 (octobre 2001) : 4956–60. http://dx.doi.org/10.1021/jf010606m.

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Kumoro, Andri Cahyo, et Indah Hartati. « Microwave Assisted Extraction of Dioscorin from Gadung (Dioscorea Hispida Dennst) Tuber Flour ». Procedia Chemistry 14 (2015) : 47–55. http://dx.doi.org/10.1016/j.proche.2015.03.009.

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Osuagwu, Chidi. « Forest West African Indigenous Diet and Modernization Diseases ». Functional Foods in Health and Disease 9, n^o 12 (31 décembre 2019) : 772. http://dx.doi.org/10.31989/ffhd.v9i12.673.

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This review paper notes that the nutritional essence of an indigenous people’s diet can, broadly, be outlined in terms of their food-inherent bioactive chemical functions. Two food crops; Yam (Dioscorea spp.) and the Oil-palm (Elaeis guineensis), define Forest West Africa, agriculturally, as Yam or Palm belt. They can also be said to, broadly, define the diet of the region, which staple base they constitute, as the Yampalm Diet type. Some unique, bioactive, chemical functions of yam identified include; dioscorin, lipoic acid, potassium, biotin and, thiocyanate, while those of oil-palm include; tocotrienols, carotenoids, retinoids and lauric acid. These alkalizing food functions are, in theory, complementary to the acidic tropical physiology of Forest West Africans. Fed on other than the Yampalm diet, Forest West Africans have been demonstrated to be highly susceptible to metabolic syndrome due to adopted alien diets. Examples are lactose intolerance from milk and inflammation reaction to wheat gluten. Some food functions of Yampalm diet; dioscorin in yam and tocotrienol from oil-palm, as examples, are efficacious in metabolic syndrome management. They are potential ‘Gene-adapted food-function supplements’ for emigrants from this area who adopt alien diets. Experiments have shown that restoration of the Forest West African diet ameliorates metabolic syndrome among the people, including their Diaspora in America. Restoration of, genetically or epigenetically, adapted indigenous diet among peoples recommends itself as part of management strategy for modernization diseases.Key terms: Yampalm diet, food function, dioscorin, tocotrienol, alien diet, lactose intolerance, metabolic syndrome, epigenetic adaptation.

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Countryman, L. William. « Channels of Imperishable Fire : The Beginnings of Christian Mystical Poetry and Dioscorus of Aphrodito. By Clement A. Kuehn. Lang Classical Studies 7. NewYork : Peter Lang, 1995. xxiv + 291 pp. $62.95. » Church History 66, n^o 4 (décembre 1997) : 787–89. http://dx.doi.org/10.2307/3169221.

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Daley, Brian E. « Dioscorus of Aphrodito : His Work and His World. By Leslie S. B. MacCoull. The Transformation of the Classical Heritage 16. Berkeley : University of California Press, 1988. xvii + 183 pp. $30.00. » Church History 60, n^o 3 (septembre 1991) : 374–75. http://dx.doi.org/10.2307/3167475.

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Mustarsidin, Muhammad, Syachruddin AR et Ahmad Raksun. « Effect of Gadung Tuber Extract (Dioscorea hispida) on Mortality of Caterpillars (Spodoptera exigua) in Shallots (Allium cepa) in East Lombok ». Jurnal Biologi Tropis 20, n^o 3 (13 janvier 2021) : 556. http://dx.doi.org/10.29303/jbt.v20i3.2356.

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Plants that can be used as pesticides are Gadung tubers. Gadung tubers contain cyanide acid to kill armyworm pests because they contain dioscorin toxins which can cause nervous disorders. The purpose of this study was to determine the effect of Gadung tuber extract (Dioscorea hispida) on Caterpillar mortality (Spodoptera exigua) in Shallot plants. This type of research is experimental research. This study used a completely randomized design (CRD). The sample used was 5 caterpillars (Spodoptera exigua) in each polybag with 5 repetitions for each concentration of Gadung tuber extract, namely 0%, 0.5%, 1.0%, 1.5%, 2.0% and 2.5%, so the total Caterpillar used was 150 Caterpillars. Gadung tuber extraction was carried out by maceration method with methanol solvent. Data were analyzed using a one-way analysis of variance at the 95% significance level, followed by DMRT (Duncans Multiple Range Test). The results showed that the Gadung tuber extract had a significant effect on the mortality of caterpillars (Spodoptera exigua) because the F count was greater than the F table (45.40>2.62), and the DMRT test results showed that the optimal concentration of Gadung tuber extract was 2.5%. Therefore, it can be concluded that the extract of Gadung tuber (Dioscorea hispida) affects the mortality of Caterpillars (Spodoptera exigua) in Shallots (Allium cepa).

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Xue, You-Lin, Takuya Miyakawa, Yoriko Sawano et Masaru Tanokura. « Cloning of genes and enzymatic characterizations of novel dioscorin isoforms from Dioscorea japonica ». Plant Science 183 (février 2012) : 14–19. http://dx.doi.org/10.1016/j.plantsci.2011.10.021.

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Sharma, Shruti, Ravi Gupta et Renu Deswal. « Dioscorea alata tuber proteome analysis shows over thirty dioscorin isoforms and novel tuber proteins ». Plant Physiology and Biochemistry 114 (mai 2017) : 128–37. http://dx.doi.org/10.1016/j.plaphy.2017.03.001.

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Mojiono, Mojiono, Mia Dewi Surya Ajiid, Sri Wulandari, Feti Apriliyanti, Fajar Alamsyah et Hamzah Fansuri. « Profil Umbi Uwi (Dioscorea alata) dan Potensi Aplikasi Pada Beragam Produk Pangan : Review ». JURNAL AGROSAINS : Karya Kreatif dan Inovatif 7, n^o 1 (21 juillet 2022) : 36–41. http://dx.doi.org/10.31102/agrosains.2022.7.1.36-41.

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Tujuan dari artikel ini yaitu untuk mengetahui profil dari umbi uwi dan potensi aplikasinya pada produk pangan. Uwi (Dioscorea alata) merupakan tanaman umbi-umbian dengan bentuk batang bulat, daun tunggal berbentuk jantung dengan memiliki rambut akar yang pendek dan kasar. Warna dari daging umbi uwi yaitu berwarna putih dan ungu, teksturnya keras dan sangat bergetah. Kandungan karbohidrat dari umbi uwi tergolong tinggi yaitu berkisar 72,6-80,2% dari berat keringnya. Selain mengandung karbohidrat, umbi uwi juga mengandung komponen bioaktif seperti dioscin, dioscorin, allantoin, choline, polifenol, dan diosgenin. Bentuk granula umbi uwi rata-rata berbentuk oval, segitiga, bulat dan poligonal dengan ukuran 10-41,5 mm. Komposisi kimia dari umbi uwi yang tertinggi yaitu kandungan air dan pati. Pati uwi dapat dimanfaatkan menjadi berbagai produk olahan seperti mie instan, beras analog dan es krim. Kandungan indeks glikemik yang rendah menjadikan mie instan dari umbi uwi menjadi unggul dibandingkan dengan jenis mie instan lainnya. Selain itu, umbi uwi juga dapat diolah menjadi beras analog dengan kandungan karbohidrat yang cukup tinggi.

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Fu, Shu-Ling, Ya-Hui Hsu, Pei-Yeh Lee, Wen-Chi Hou, Ling-Chien Hung, Chao-Hsiung Lin, Chiu-Ming Chen et Yu-Jing Huang. « Dioscorin isolated from Dioscorea alata activates TLR4-signaling pathways and induces cytokine expression in macrophages ». Biochemical and Biophysical Research Communications 339, n^o 1 (janvier 2006) : 137–44. http://dx.doi.org/10.1016/j.bbrc.2005.11.005.

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Wang, Zhikuan, Jiewei Tian, Xiaoguang Li, Longzhan Gan, Linling He, Yiwen Chu et Yongqiang Tian. « Streptomyces dioscori sp. nov., a Novel Endophytic Actinobacterium Isolated from Bulbil of Dioscorea bulbifera L. » Current Microbiology 75, n^o 10 (26 juin 2018) : 1384–90. http://dx.doi.org/10.1007/s00284-018-1534-9.

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Liu, Yen-Wenn, Huey-Fang Shang, Chung-Kwe Wang, Feng-Lin Hsu et Wen-Chi Hou. « Immunomodulatory activity of dioscorin, the storage protein of yam (Dioscorea alata cv. Tainong No. 1) tuber ». Food and Chemical Toxicology 45, n^o 11 (novembre 2007) : 2312–18. http://dx.doi.org/10.1016/j.fct.2007.06.009.

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Montserrat, Dominic. « L. S. B. MacCoull, Dioscorus of Aphrodito : His Work and his World (The transformation of the classical heritage, XVI). Berkeley : University of California Press, 1988. Pp. xiv + 174, 9 pls. ISBN 0-520-06226-4. $30.00. » Journal of Roman Studies 82 (novembre 1992) : 308–9. http://dx.doi.org/10.2307/301357.

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Bissell, Jonah. « PATRIARCH DIOSCORUS OF ALEXANDRIA : THE LAST PHARAOH AND ECCLESIASTICAL POLITICS IN THE LATER ROMAN EMPIRE. By Volker L.Menze. Oxford Early Christian Studies, 130. Oxford, UK ; New York, NY : Oxford University Press, 2023. . Pp. viii + 226. Hardcover, $90.00. » Religious Studies Review 49, n^o 4 (décembre 2023) : 645. http://dx.doi.org/10.1111/rsr.16758.

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Velázquez-Hernández, Jocelyn Maira, Noe Durán-Puga, José Ariel Ruíz-Corral, Diego R. González-Eguiarte, Fernando Santacruz-Ruvalcaba et Agustín Gallegos-Rodríguez. « Distribución geográfica y usos de especies del género Dioscorea ». e-CUCBA 10, n^o 19 (22 décembre 2022) : 141–50. http://dx.doi.org/10.32870/ecucba.vi19.273.

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Species of the genus Dioscorea are widely distributed throughout the world. It is a resource used in different countries because theyproduce tubers that offer numerous benefits for human health due to their diosgenin content, a compound that is used as: anti-inflammatory, androgenic, estrogenic and in the preparation of contraceptive drugs; It is also mentioned that these compounds havecytotoxic, antitumor, antifungal, immunoregulatory, hypoglycemic and cardiovascular properties, they are also used for theprevention and treatment of degenerative diseases. Species such as Dioscorea bulbifera, Dioscorea cayenensis, Dioscorea colletii,Dioscorea deltoidea, Dioscorea futschauensis, Dioscorea nipponica, Dioscorea panthaica, Dioscorea parviflora, Dioscoreapolygonoides, Dioscorea pseudojaponica, Dioscorea spongiosa, Dioscorea villosa, Dioscorea composita, Dioscorea zingiberensis,produce a higher concentration of diosgenin. The tubers and roots of this group are part of the oldest foods consumed by humans,given their high nutritional, ecological and economic level. In many tropical countries, the use of various tubers and roots of thegenus Dioscorea play a very important role as a main source of energy and essential nutrients at low cost, they are also used asfodder for livestock and a source of income. This plant are rich in starch, vitamins, minerals and lipids, and have the potential tofight hunger in third world countries. Currently there is little or no knowledge in Mexico on how to cultivate these species.

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Hou, Wen-Chi, Jih-Shiou Liu, Hsien-Jung Chen, Tzeng-Err Chen, Chung-Fang Chang et Yaw-Huei Lin. « Dioscorin, the Major Tuber Storage Protein of Yam (Dioscorea batatasDecne) with Carbonic Anhydrase and Trypsin Inhibitor Activities ». Journal of Agricultural and Food Chemistry 47, n^o 5 (mai 1999) : 2168–72. http://dx.doi.org/10.1021/jf980738o.

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Saleha, Sitti, Nurdin Saidi, Saiful ., Murniana ., Saida Rasnovi et Teuku M. Iqbalsyah. « NUTRITIONAL COMPOSITION OF DIOSCOREA HISPIDA FROM DIFFERENT LOCATIONS AROUND LEUSER ECOSYSTEM AREA ». Jurnal Natural 18, n^o 1 (1 février 2018) : 1–6. http://dx.doi.org/10.24815/jn.v18i1.8504.

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Proximate analysis of Dioscorea hispida tubers, collected from five locations around Leuser ecosystem in Aceh Province, showed variations amongst samples. Standard AOAC method for proximate analysis of the fresh weight showed that the water content varied between 15.8 - 37.8%, crude protein 1.13 -6.20%, crude lipid 1.99 - 9.36% and ash 0.29 - 1.24%. The total carbohydrate was high, i.e. between 58.3 -71.9%. The main mineral was phosphorus, with a value of 11.7 - 46.9 mg/100g. These variations could be due to soil, climate and weather factors, as well as postharvest handling. Phytochemical tests showed that all of the samples contained alkaloids and terpenoids. One of the samples (LP) also contained phenol and steroid. The high cyanide content in the tubers (379 - 739 ppm) was easily removed by repeated washing. The cyanide level dropped significantly after the 3rd wash. Information on nutritional content in D. hispida is essential for planning its utilization. Increasing the economic value of D. hispida is expected to attract people around the Leuser ecosystem to cultivate and utilize it, thereby reducing illegal forest encroachment.Keywords: Dioscorea hispida, proximate, Leuser, janeng, gadung, starchREFERENCESBarton H 2014 Yams: Origins and Development, Encyclopaedia of Global Archaeology, p 7943-7947, (Springer. DOI 10.1007/978-1-4419-0465-2_2193).Obidiegwu J E and Akpabio E M 2017 The Geography of Yam Cultivation in Southern Nigeria: Exploring Its Social Meanings and Cultural Functions J. Ethnic Foods 4 28-35.Chandrasekara A and Kumar T J 2016 Roots and Tuber Crops as Functional Foods: A Review on Phytochemical Constituents and Their Potential Health Benefits Intl. J. Food Sci. 2016 1-15.Kumar S, Das G, Shin H-S and Patra J K 2017 Dioscorea spp. (A Wild Edible Tuber): A Study on Its Ethnopharmacological Potential and Traditional Use by the Local People of Similipal Biosphere Reserve India Front. Pharmacol. 8 52.Lin J Y, Lu S, Liou Y L and Liou H L 2006a Antioxidant and Hypolipidaemic Effects of a Novel Yam–boxthorn Noodle in an In Vivo Murine Model Food Chem. 94 377–384.Lin J Y, Lu S, Liou Y L and Liou H L, 2006b, Increased IgA and IgG Serum Levels Using a Novel Yam–boxthorn Noodle in a BALB/c Mouse Model Food Chem. Toxicol. 44 170–178.Bhandari M R and Kawabata J 2004 Organic Acid, Phenolic Content and Antioxidant Activity of Wild Yam (Dioscorea spp.) Tubers of Nepal Food Chem. 88 163–168.Lin J T and Yang D J 2008 Determination of Steroidal Saponins in Different Organs of Yam (Dioscorea pseudojaponica Yamamoto) Food Chem. 108 1068–1074.AOAC 1984. Official Methods of Analysis. Washington DC: Association of Official Analytical Chemists.Harborne J B 1984 Phytochemical Method 2nd ed. (London: Chapman and Hall Ltd.)Bhandari M R, Kasai T and Kawabata J 2003 Nutritional Evaluation of Wild Yam (Dioscorea spp.) Tubers of Nepal Food Chem. 82 619–623.Adepoju O T, Boyejo O and Adeniji P O 2017 Nutrient and Antinutrient Composition of Yellow Yam (Dioscorea cayenensis) Products Data in Brief 11 428–431.Wu Z-G, Jiang W, Nitin M, Bao X-Q, Chen S-L and Tao Z-M 2016 Characterizing Diversity Based on Nutritional and Bioactive Compositions of Yam Germplasm (Dioscorea spp.) Commonly Cultivated in China J. Food Drug Anal. 24 367 – 375.Udensi E A, Osebele H O and Iweala O O 2008 The Investigation of Chemical Composition and Functional Properties of Water Yam (Dioscorea alata): Effect of Varietal Differences Pakistan J. Nutrition 7(2) 342-344.Hornick S B 1992 Factors Affecting the Nutritional Quality of Crops Am. J. Altern. Agric. 7 (Special Issue on Soil Quality) 63-68.Lewicki P P 2004 Water as the Determinant of Food Engineering Properties, A Review J. Food Eng. 61 483–495Yeh A-I, Chan T-Y and Chuang G C-C 2009 Effect of Water Content and Mucilage on Physico-chemical Characteristics of Yam (Discorea alata Purpurea) Starch J. Food Eng. 95 106–114.McPherson E and Jane J 1999 Comparison of Waxy Potato with Other Root And Tuber Starches Carbohydr. Polym. 40 57–70.Freitas R A, Paula R C, Feitosa J P A, Rocha S and Sierakowski M R 2004 Amylose Contents, Rheological Properties and Gelatinization Kinetics of Yam (Dioscorea alata) and cassava (Manihot utilissima) starches Carbohydr. Polym. 55 3–8.Barsby T L, Donald A M, Frazier P J, Donald A M, Perry P A and Waigh T A 2001 The Impact of Internal Granule Structure on Processing and Properties in Starch: Advances in Structure and Function p 45-52 (Royal Society of Chemistry, http://dx.doi.org/10.1039/9781847551917-00045)Tattiyakul J, Naksriarporn T and Pradipasena P 2012 X-ray Diffraction Pattern and Functional Properties of Dioscorea hispida Dennst Starch Hydrothermally Modified at Different Temperatures Food Bioproc. Technol. 5 964–971.Savikin-Fodulovic K, Grubisic D, Culafic L, Menkovic N and Ristic M 1998 Diosgenin and Phytosterols Content in Five Callus Lines of Dioscorea balcanica Plant Sci. 135 63–67.Cushnie T. P. T, Cushnie B and Lamb A J 2014 Alkaloids: An Overview of Their Antibacterial, Antibiotic-enhancing and Antivirulence Activities Int. J. Antimicrob. Agents 44 (5) 377-386.Tholl D 2015 Biosynthesis and Biological Functions of Terpenoids in Plants, Biotechnology of Isoprenoids p 63-106 Part of the Advances in Biochemical Engineering/Biotechnology book series (ABE, volume 148).Nagata K, Aistrup G L, Honda H, Shono T and Narahashi T 1999 Modulation of the Nicotinic Acetylcholine Receptor by Dioscorine in Clonal Rat Phaeochlomocytoma (PC12) Cells Pestic. Biochem. Physiol. 64 (3) 157–165.Bhandari M R and Kawabata J 2005 Bitterness and Toxicity in Wild Yam (Dioscorea spp.) Tubers of Nepal Plant Foods Hum. Nutr. 60 129–135, 2005.White W L B , Arias-Garzon D I, McMahon J M and Sayre R 1998 Cyanogenesis in Cassava: The Role of Hydroxynitrile Lyase in Root Cyanide Production Plant Physiol. 116 1219-25.Kumoro A C and Hartati I. 2015 Microwave Assisted Extraction of Dioscorin from Gadung (Dioscorea hispida Dennst) Tuber Flour, Procedia Chem. 14 47 – 55.

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Pertiwa, Susy Ika, J. Jumari et Erry Wiryani. « Karakterisasi Uwi-Uwian (Dioscorea spp) Dari Banjarnegara Berdasarkan Penanda Morfologi ». Bioma : Berkala Ilmiah Biologi 20, n^o 2 (27 janvier 2018) : 92. http://dx.doi.org/10.14710/bioma.20.2.92-99.

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The diversity of Dioscorea spp. both inter-species and intra-species are spreaded in several areas in Central Java, including Banjarnegara. Dioscorea is a plant that has the potentials to be developed and cultivated. The purposes of this reasearch are to identify the species, characterize the morphological characters (stem, leaf, and tuber) of eight varians Dioscorea spp from Banjarnegara. The sample used in this reasearch are the eight varians of Dioscorea spp from Banjarnegara. The Identification was done by using a identification keys. Characterization of morphological characters was done by using the guidebook of Descriptor for Yam. The results showed that eight cultivars of Dioscorea spp are grouped into two types: Dioscorea alata and Dioscorea esculenta. Dioscorea alata has a stem which rotate the to the right, rectangular shaped of stem, it’s has wing and doesn’t have a spin, elongated heart-shaped leaves, oval-oblong and round shaped tuber. Dioscorea esculenta has a stem which rotate to the left, rounded shaped of stem, it has not wing but spiked, dilated heart-shaped leaf, and oval shape tuber. Keywords: Dioscorea spp, identifikasi, characteristic, morphology,

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Liu, Linya, Yacheng Huang, Xiaolong Huang, Jianghua Yang, Wenqiang Wu, Yun Xu, Ziwen Cong, Jun Xie, Wei Xia et Dongyi Huang. « Characterization of the Dioscorin Gene Family in Dioscorea alata Reveals a Role in Tuber Development and Environmental Response ». International Journal of Molecular Sciences 18, n^o 7 (20 juillet 2017) : 1579. http://dx.doi.org/10.3390/ijms18071579.

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Hou, Wen-Chi, Hsien-Jung Chen et Yaw-Huei Lin. « Dioscorins, the major tuber storage proteins of yam (Dioscorea batatas Decne), with dehydroascorbate reductase and monodehydroascorbate reductase activities ». Plant Science 149, n^o 2 (décembre 1999) : 151–56. http://dx.doi.org/10.1016/s0168-9452(99)00152-1.

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Hamon, Perla, Jean-Paul Brizard, Jeanne Zoundjihékpon, Christophe Duperray et Alain Borgel. « Étude des index d'ADN de huit espèces d'ignames (Dioscorea sp.) par cytométrie en flux ». Canadian Journal of Botany 70, n^o 5 (1 mai 1992) : 996–1000. http://dx.doi.org/10.1139/b92-123.

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Nine species (wild and cultivated) and some interspecific (wild × cultivated) hybrids were analysed by flow cytometry. This study confirms various polyploidy levels within cultivated species. DNA index varied by a factor of 1 to 3 for Dioscorea alata, 1 to 2.25 for Dioscorea bulbifera, and 1 to 2 for Dioscorea cayenensis-rotundata, depending on the clone or cultivar considered. In wild species, only one DNA index per species was obtained. Whenever a relationship between DNA index and chromosome number could be established, the size of genome 1C was evaluated in picograms and base pairs. Two genome sizes were observed: genome A in D. cayenensis-rotundata, Dioscorea abyssinica, Dioscorea mangenotiana, and Dioscorea praehensilis and genome B in Dioscorea togoensis. These genomes were small sizes, only 1.5 to 2.1 times larger than that of Arabidopsis. Key words: yams, Dioscorea, flow cytometry, DNA index, genome size.

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Obidiegwu, Jude E., Jessica B. Lyons et Cynthia A. Chilaka. « The Dioscorea Genus (Yam)—An Appraisal of Nutritional and Therapeutic Potentials ». Foods 9, n^o 9 (16 septembre 2020) : 1304. http://dx.doi.org/10.3390/foods9091304.

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The quest for a food secure and safe world has led to continuous effort toward improvements of global food and health systems. While the developed countries seem to have these systems stabilized, some parts of the world still face enormous challenges. Yam (Dioscorea species) is an orphan crop, widely distributed globally; and has contributed enormously to food security especially in sub-Saharan Africa because of its role in providing nutritional benefits and income. Additionally, yam has non-nutritional components called bioactive compounds, which offer numerous health benefits ranging from prevention to treatment of degenerative diseases. Pharmaceutical application of diosgenin and dioscorin, among other compounds isolated from yam, has shown more prospects recently. Despite the benefits embedded in yam, reports on the nutritional and therapeutic potentials of yam have been fragmented and the diversity within the genus has led to much confusion. An overview of the nutritional and health importance of yam will harness the crop to meet its potential towards combating hunger and malnutrition, while improving global health. This review makes a conscious attempt to provide an overview regarding the nutritional, bioactive compositions and therapeutic potentials of yam diversity. Insights on how to increase its utilization for a greater impact are elucidated.

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Ramser, Juliane, Kurt Weising, Ryohei Terauchi, Günter Kahl, Cristina Lopez-Peralta et Werner Terhalle. « Molecular marker based taxonomy and phylogeny of Guinea yam (Dioscorea rotundata – D. cayenensis) ». Genome 40, n^o 6 (1 décembre 1997) : 903–15. http://dx.doi.org/10.1139/g97-117.

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Four different molecular techniques were used to assess relationships among 21 accessions of Guinea yam (Dioscorea rotundata and Dioscorea cayenensis) and 21 accessions belonging to seven putative progenitor species. Random amplified polymorphic DNA (RAPD) and microsatellite-primed PCR (MP-PCR) analysis yielded 246 informative characters that were transformed into a matrix of pairwise distances and analyzed by neighbor joining or split decomposition. Both methods gave congruent results. Well-separated groups were formed that corresponded to their species designation. Dioscorea rotundata and D. cayenensis accessions were clearly separated from each other, supporting the concept that both are distinct species. Two morphological intermediates grouped together with D. rotundata. All investigated species fell into two main clusters, one comprising D. rotundata, D. cayenensis, Dioscorea abyssinica, Dioscorea liebrechtsiana, and Dioscorea praehensilis, the other comprising Dioscorea smilacifolia, Dioscorea minutiflora, Dioscorea burkilliana, and Dioscorea togoensis. The same grouping was also obtained by comparative sequence analysis of chloroplast DNA, which supports earlier studies of nuclear rDNA variation and chloroplast restriction fragment length polymorphisms. We also analyzed the same set of Dioscorea samples with the recently developed random amplified microsatellite polymorphism (RAMPO) technique. A series of diagnostic RAMPO bands was identified that clearly distinguished between D. rotundata and D. cayenensis. Some of these bands could also be traced back to the putative progenitors of both species. The evolutionary origin of Guinea yam is discussed in light of the present results.Key words: random amplified polymorphic DNA, RAPD, random amplified microsatellite polymorphisms, RAMPO, chloroplast DNA, genetic relatedness.

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Makiyah, Sri Nabawiyati Nurul, et Muhammad Sasmito Djati. « Potency of Purple Yam (Dioscorea alata L) as an Immunomodulatory Agent ». Berkala Kedokteran 14, n^o 1 (24 février 2018) : 89. http://dx.doi.org/10.20527/jbk.v14i1.4589.

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Abstract: Purple yam tuber (Dioscorea alata L.) is one of tubers that has not been used optimally. One of the nutrients contained in Dioscorea species is Saponin Steroid. This paper aims to examine the potential of Steroid Saponin in purple yam tuber (Dioscorea alata L.) as an immunomodulatory agent. The method is by reviewing from various literatures. This article found that Steroid Saponin in purple yam tuber (Dioscorea alata L.) had a potency as an immunomodulatory agent. Keywords: Purple yam tuber (Dioscorea alata L), Steroid Saponin, Immunomodulatory

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Paul, Chiranjit, et Bimal Debnath. « A report on new chromosome number of three Dioscorea species ». Plant Science Today 6, n^o 2 (27 avril 2019) : 147–50. http://dx.doi.org/10.14719/pst.2019.6.2.490.

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Chromosomal study conducted in nine species of Dioscorea from different forest belts of Tripura revealed that their somatic chromosome number ranged from 2n=40 to 2n=60. The record of 2n=40 chromosome in the sexual phenotypes of Dioscorea hamiltonii, Dioscorea glabra and Dioscorea pubera are the first time report from Tripura, North East India. Moreover the somatic chromosome counts of 2n=60 in Dioscorea pentaphylla would be attributed as a new cytotype. However at the respective ploidy level no difference in somatic chromosome count was observed between their sexes.

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Hazrati, K. Z., S. M. Sapuan, M. Y. M. Zuhri et R. Jumaidin. « Extraction and Characterization of Potential Biodegradable Materials Based on Dioscorea hispida Tubers ». Polymers 13, n^o 4 (15 février 2021) : 584. http://dx.doi.org/10.3390/polym13040584.

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This study was driven by the stringent environmental legislation concerning the consumption and utilization of eco-friendly materials. Within this context, this paper aimed to examine the characteristics of starch and fibres from the Dioscorea hispida tuber plant to explore their potential as renewable materials. The extraction of the Dioscorea hispida starch and Dioscorea hispida fibres was carried out and the chemical composition, physical, thermal, morphological properties, and crystallinity were studied. The chemical composition investigations revealed that the Dioscorea hispida starch (DHS) has a low moisture t (9.45%) and starch content (37.62%) compared to cassava, corn, sugar palm, and arrowroot starches. Meanwhile, the Dioscorea hispida fibres (DHF) are significantly low in hemicellulose (4.36%), cellulose (5.63%), and lignin (2.79%) compared to cassava, corn hull and sugar palm. In this investigation the chemical, physical, morphological and thermal properties of the Dioscorea hispida fibre and Dioscorea hispida starch were examined by chemical composition investigation, scanning electron microscopy (SEM), particle size distribution, thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), and Fourier transform infrared (FTIR), respectively. It was found that Dioscorea hispida waste is promising alternative biomass and sustainable material with excellent potential as a renewable filler material for food packaging applications.

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Girma, Gezahegn, Ranjana Bhattacharjee, Antonio Lopez-Montes, Badara Gueye, Sam Ofodile, Jorge Franco et Michael Abberton. « Re-defining the yam (Dioscorea spp.) core collection using morphological traits ». Plant Genetic Resources : Characterization and Utilization 16, n^o 3 (3 mai 2017) : 193–200. http://dx.doi.org/10.1017/s1479262117000144.

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AbstractDevelopment of core collection representing the diversity in the entire germplasm creates a better access and enhanced utilization of the main collection thus allowing rapid evaluation in crop improvement programs. Core collections are dynamic in nature and needs revisiting when additional germplasm and information becomes available. In the current study, an attempt was made to re-define the previously developed yam (Dioscorea spp) core collection using 56 morphological traits. Information on additional acquired germplasm and presence of duplicates or mislabelled accessions in the entire collection was also used. The re-defined core collection consisted of 843 accessions and represented about 20% of the entire collection. It included six Dioscorea species, of which accessions of Dioscorea rotundata are in the majority (73.54%) followed by Dioscorea alata (21.35%), Dioscorea bulbifera (1.66%), Dioscorea cayenensis (1.42%), Dioscorea dumetorum (1.42%) and Dioscorea esculenta (0.59%). The Shannon weaver diversity index and principal component analysis revealed the maximum diversity captured in the core from the base collection. This re-defined core collection is more valuable than the original core since it represents true-to-type accessions ensuring reliability for enhanced utilization of germplasm in yam improvement programs.

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Fatma, Lania Yuchanitz, J. Jumari et Sri Utami. « Keanekaragaman Dioscorea spp dan habitatnya di Kabupaten Kudus, Jawa Tengah Diversity and habitat of Dioscorea spp in Kudus, Central Java ». Bioma : Berkala Ilmiah Biologi 20, n^o 1 (23 juillet 2018) : 17. http://dx.doi.org/10.14710/bioma.20.1.17-24.

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Dioscorea spp (Yam) is one of the potential local food producers. It has advantage of high species diversity, containing high carbonhydrate and easy to grow. The aim of this research is to determine the variants of Dioscorea spp, examine the structure and composition of trees around Dioscorea spp habitat and determine the enviromental factors of Dioscorea spp habitat. The research was carried out in May-June 2017. The sampling technique was using exploration and quadratic method by plotting the trees into 5 squares (10 m x 10 m) with diameter of stem more than 10 cm. The name of each species, number of individuals and stem diameter measurement of each plot were recorded. The data of diversity Dioscorea spp and environmental factors were analyzed by sort of descruptive set and the trees was analyzed by vegetation analysis. The results showed that 4 species of Dioscorea spp. There are D. hispida, D. bulbifera, D. alata and D. esculenta. D. alata has 3 variants called uwi ireng, uwi ungu and uwi bangkulit. D. esculenta has 2 variants called gembili bebek and gembili terpong. The trees around Dioscorea spp obtained 21 species with the most important index is banana (Musa paradisiaca) and sengon (Albizia chinensis). The environmental factors were indicated the appropiate growth of Dioscorea spp. Key words: Dioscorea spp, local food stuffs and variant types

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