Letteratura scientifica selezionata sul tema "Forced chicory root"

The objectiv of this study was to determine wheather the root diameter had an effect on the yield components of forced chicory. The roots of cv. Goriški were divided into four diameters: 10, 20, 30 and 40 mm. Overall results have cleraly demonstrated a high correlation between the root diameter and most of the yield parameters. An increase in root diameter resulted in a significant increase in the total weight, as well as in the net weight of chicons. Net weight of yield varied from 4.20 g per chicon at 10 mm to 72.75 g per chicon at 40 mm. The thickness of the roots had no remarkeble influence on discarded yield of chicons. Root productivity gradually decreased in proportion to root diameter, except at minimum ones. Most of the morphological features of chicons were improved with diameter thickness. In the end it has been verified that marketable yield of forced chicory per unit area, was independent of the root diameter, except at the smallest size.

A method was developed to improve the yield and quality of chicons of witloof chicory (Cichorium intybus L.) forced hydroponically from roots taken following long-term storage. The method combines the use of a resilient material (polyurethane foam) with the application of pressure to the developing chicons. At the start of forcing, weights of 0, 150, 300, 450, and 900 g/root were applied to the crown and maintained until harvest. Marketable yields and density of chicons of the late-forcing cultivar Faro increased with increasing weight applied. Increasing weight also significantly decreased the length: diameter ratio of chicons, an indicator of quality. Increased marketable yield and improved quality of `Bea' (intermediate to late-forcing cultivar) chicons were achieved with application of 450 g/root. The technique provides a tool for improving economic yields of late-season, hydroponically forced witloof chicory.

Relevance. One of the types of agricultural raw materials for the food industry is the root chicory, the product from the roots of which is produced in pure form, as well as is an important component in the production of tea and coffee drinks, confectionery. Its value is determined by the content in the roots of inulin, fructose, intibin and chicory. Despite the great economic importance and economic profitability of chicory cultivation, in recent years, the local processing industry is not provided with this type of raw material and is forced to buy the product from dried root crops in other countries, such as Ukraine, Italy and India. Modern agricultural production is in dire need of new varieties of root chicory, combining high yields and chemical and technological qualities, having the form of a root crop suitable for mechanized harvesting, and adapted to cultivation in soil and climatic conditions of the Non-chernozem zone. Purpose of work: to assess the nature of the impact of ultraviolet radiation in the time mode on watermelon seeds using cytogenetic analysis.Material and methods. The article describes the results of the test in the control nursery of a new sample of chicory root with 0428 selection of Rostov OSC.Results. As a result of breeding work, a promising sample of root chicory. It was isolated early maturing, with high yields and economically valuable properties, root crop truncated, suitable for mechanized harvesting by commercially available machines.

Relevance. One of the types of agricultural raw materials for the food industry is the root chicory, the product from the roots of which is produced in pure form, as well as is an important component in the production of tea and coffee drinks, confectionery. Its value is determined by the content in the roots of inulin, fructose, intibin and chicory. Despite the great economic importance and economic profitability of chicory cultivation, in recent years, the local processing industry is not provided with this type of raw material and is forced to buy the product from dried root crops in other countries, such as Ukraine, Italy and India. Modern agricultural production is in dire need of new varieties of root chicory, combining high yields and chemical and technological qualities, having the form of a root crop suitable for mechanized harvesting, and adapted to cultivation in soil and climatic conditions of the Non-chernozem zone. Purpose of work: to assess the nature of the impact of ultraviolet radiation in the time mode on watermelon seeds using cytogenetic analysis.Material and methods. The article describes the results of the test in the control nursery of a new sample of chicory root with 0428 selection of Rostov OSC.Results. As a result of breeding work, a promising sample of root chicory. It was isolated early maturing, with high yields and economically valuable properties, root crop truncated, suitable for mechanized harvesting by commercially available machines.

Production of witloof chicory (Cichorium intybus) roots for chicons or for inulin is typically a northern U. S. or European enterprise. Although chicons (Belgian endive) command a high market price, nearly all are imported from Europe. If appropriate cultivars and optimum summer growing conditions can be identified, Tennessee's mild winters may permit relatively low cost forcing techniques. Studies with these objectives were initiated in 1992 at two locations using six cultivars, two planting dates and two within row plant densities. Root yields varied from 13 to 40 Mg·ha-1 between locations and among cultivars. Incidence of bolting was greater than 50% for the earliest maturing cultivar, `Daliva', but less than 5% for the late maturing cultivar, `Rinof', at the warmer experimental site (Knoxville, elev. 251m). No bolting of any cultivar occurred at the cooler experimental site (Crossville, elev. 549m). Data on yield and quality of forced chicons and nitrate content of edible leaf tissue will be presented.

Daily living and functioning under stress can lead to mental health problems such as anxiety or depression. Over the past decades, a number of studies have been conducted to determine the relationship between the central nervous system (CNS), intestinal flora and bidirectional communication along the gut brain axis (GBA) in the maintaining of homeostasis. One of the most important factors regulating GBA functioning in exposure to stress may be a proper diet enriched in the supplementation with pre-, pro-and synbiotics. In the present study, we examined whether a 10-week oral preventive supplementation with natural prebiotics: topinambur powder (TPB) and chicory root inulin (INU) influenced an anxiety, depressive behavior and cognition in mice exposed to the chronic unpredictable mild stress (CUMS). Additionally, a fluoxetine (FLU) has been used as a reference antidepressive drug. Furthermore, we assessed the effect of TPB, INU and FLU administration on neurogenesis in mice exposed to CUMS and finally analyzed fecal microbiota for possible changes after TPB and INU supplementation in CUMS induced mice. Results obtained from the behavioral studies (elevated plaze maze, forced swim and Morris water maze test) indicated, that 10 week supplementation with TPB (250 mg/kg) and INU (66 mg/kg), similarly to FLU (12 mg/kg), significantly mitigated an anxiety and stress as well as protected learning and memory functions in the CUMS induced mice compared to the control stressed group. Additionally, TPB and INU CUMS mice showed significantly higher level of neurogenesis in comparison to control CUMS group. Interestingly, results obtained from the fecal microbiota analysis showed a beneficial effect of TPB and INU supplementation against CUMS-induced intestinal dysbiosis in mice. In conclusion, the obtained results showed that a long-term, preventive supplementation with TPB or INU alleviates the negative effects such as anxiety, cognitive disorders or dysbiosis in mice exposed to chronic unpredictable stress.

One of the reserves for improving the quality indicators of haulm harvesters is to improve the technological process of haulm cutting by improving the design of cutters for haulm residues from the heads of root crops. In this regard, the development of new and improved working bodies for trimming the remains of tops from the heads of chicory root crops and studying the influence of the constructive and kinematic parameters of the cutter in order to improve the performance of haulm harvesters is an urgent scientific task. The developed mathematical models of the process of contact interaction of the copier with the head of the chicory root crop are the initial prerequisites for further technological analysis of cutting the remains of tops from the heads of root crops. The final solutions of integral equations will make it possible to justify the main parameters of the pruner based on the conditions of permissible horizontal force and permissible normal stresses, or from the condition of not knocking out root crops from the soil and not damaging root crops.

The search for effective technical solutions and scientific directions for substantiating the rational parameters of the working bodies of hedge cutting devices, which ensure an increase in the production of the strategically important for the leading sectors of the economy of Ukraine (energy - biofuel, food - coffee, pharmaceutical - inulin) culture, or root crops of chicory is a relevant and significant direction research, both for science and practice. The article provides the results of testing the adequacy of the developed analytical model, which functionally describes the process of unloading the cut stubble onto the surface of the harvested field by the transport element (screw conveyor) of the stubble cutting module of the root harvester depending on the parameters of the screw conveyor. Based on the processing of the experimental array of data, the regression equation of the change in the width of the formed swath of cut swath was obtained depending on the input parameters: the speed of the swath harvesting module, the swath yield and the rotation frequency of the screw conveyor. It was found that within the range of variation of the input factors, the speed of movement of the module from 1.6 to 2.4 m/s, the yield of chicory root crops from 120 to 180 t/ha and the rotation frequency of the screw conveyor from 40 to 100 rpm, the width of the formed roll of chopped the width of the swath is in the range from 0.5 to 1.4 m. The difference between the experimental and theoretical values of the width of the formed swath is within 5...10%. The obtained results of scientific research are a further step in the improvement of the methodology for optimizing the rational parameters of the working bodies of root-harvesting machines.

The study aimed to analyze gene expression linked to skeletal muscle growth and lipid metabolism in broiler chickens fed with plant extracts. Five groups of chickens were formed: four experimental groups and one control group. The diets of the experimental groups were supplemented with different plant extracts: chicory, St. John’s wort, maral root, and creeping thyme, whereas the control group received feed without phytobiotic compounds. Weekly weighings were conducted (n = 36). The chickens were slaughtered at day 26 for tissue sampling of four birds from each group. Gene expression (MYOG, MSTN, FASN) related to muscle growth and fatty acid synthesis was analyzed using the β-actin ACTB gene as a reference. Blood samples were taken at day 35 for biochemical analysis and anatomical dissection was performed. The study revealed that using plant extracts from chicory, thyme, and maral root increased MYOG gene activity by 4.21, 7.45, and 8.93 times, respectively. T. serpyllum extract boosted the MSTN gene by 10.93 times, impacting muscle growth regulation. FASN gene expression for fatty acid synthesis increased significantly by 18.22–184.12 times with plant extracts. The best results regarding meat productivity of chickens were obtained when using R. carthamoides extract. The results of the study will serve as a basis for further development of a phytocomposition designed to increase the meat productivity of broiler chickens in the production of environmentally safe poultry products.

The study was conducted during the winter (rabi) season of 201617 and 201718 at Ludhiana, Punjab with the objective to evaluate the effect of sowing methods and seed rates on productivity, quality and economics of chicory (Cichorium intybus L.). The experiment was laid out in split-plot design keeping sowing methods, i.e. bed (1 row), bed (2 rows), ridge (1 row), ridge (2 rows), flat (60 cm) and flat (30 cm), in main plots and seed rates, i.e. 0.5, 0.75, 1.0 and 1.25 kg/ha, in subplots. Results revealed that, the higher plant population under bed (2 rows) and better yield attributes under ridge (1 row) resulted in the highest root yield and net returns. Although crop sown as flat (30 and 60 cm) also gave root yield similar to former sowing methods but roots obtained under flat sowing were physically distorted, i.e. forked and cracked. Growth, photosynthetic parameters and root yield and benefit: cost ratio showed increasing trend only up to 1.0 kg/ha seed rate but shoot yield increased linearly up to 1.5 kg/ha seed rate. Final plant population, plant height at harvesting, root length and shoot yield had direct positive effect on root yield but dry matter of root at harvesting had positive indirect effect on root yield via. plant population

La racine forcée d’endive est un coproduit de la culture de l’endive, produit caractéristique du Nord de la France, de la Belgique et des Pays-Bas. Actuellement sous utilisé en méthanisation ou en alimentation animale, ce coproduit contient pourtant des molécules d’intérêts à haute valeur ajoutée : les acides caféoylquiniques. Ces molécules possèdent des activités antioxydantes, anti-inflammatoires et permettent de limiter les maladies du désordre métabolique. Ce travail de thèse vise à intensifier le prétraitement, l’extraction, la purification et la fonctionnalisation des acides caféoylquiniques à partir des racines forcées pour développer de nouvelles molécules bioactives biosourcées potentiellement intéressantes pour le secteur cosmétique et nutraceutique. Une dernière partie de la thèse porte sur l’étude technico-économique du procédé pour estimer sa rentabilité économique en fonction du secteur d’application visé. La première partie porte sur l’effet des prétraitements conventionnels (découpe et séchage) ainsi que l’effet d’un prétraitement électrique par champs électriques pulsés sur les teneurs en acides caféoylquiniques dans la biomasse. L’effet de l’ajout d’une solution antioxydante lors de l’extraction est également étudié. Dans un deuxième temps, une optimisation de l’extraction est réalisée à partir de biomasse sèche et fraiche. L’influence de facteurs tels que la température, le ratio solide/liquide, ainsi que la nature du solvant a été étudiée. De plus, des cinétiques d’extraction ont été tracées pour étudier les paramètres cinétiques à l’aide d’un modèle empirique. La pureté de l’extrait obtenu étant faible, des étapes de purification sont donc nécessaires. Par la suite, les travaux se sont portés sur la purification de l’extrait brut à l’aide de résines macroporeuses ainsi que par extraction liquide/liquide. Pour la purification par résine, un screening de résines est réalisé suivi d’une optimisation des conditions opératoires de purification avec la résine choisie. Des modélisations des phénomènes d’adsorption sont réalisées pour déterminer les étapes limitantes ainsi que la capacité maximale d’adsorption. Pour l’extraction liquide/liquide, un screening de solvants verts est effectué à partir d’un milieu aqueux et hydro-éthanolique puis une optimisation des conditions opératoires avec le meilleur solvant est réalisée. La pénultième partie de la thèse cherche à fonctionnaliser par estérification les acides caféoylquiniques à partir d’une solution modèle puis d’un extrait réel. Les conditions d’estérification sont optimisées pour augmenter la vitesse de réaction ainsi que le taux de conversion. Des esters avec différentes longueurs de chaine sont obtenus et l’activité antioxydante ainsi que les propriétés anti-UV sont étudiées. La fonctionnalisation est par la suite effectuée sur un extrait réel. Une étude technico-économique conclut la thèse permettant d’ouvrir sur des perspectives quant aux conditions nécessaires à l’industrialisation du procédé de valorisation des racines forcées d’endive
Forced chicory root is a by-product of Belgian endive culture, a typical crop of northern France, Belgium and the Netherlands. Currently under-utilized in methanation or animal feed, this by-product contains molecules of interest: caffeoylquinic acids. These molecules have antioxidant and anti-inflammatory properties, and a potential for reducing metabolic disorders. This thesis aims to intensify the pre-treatment, extraction, purification and functionalization of caffeoylquinic acids from forced chicory roots to develop new bioactive biosourced molecules of potential interest to the cosmetics and nutraceutical sectors. The final part of the thesis deals with a technico-economical study of the process to estimate its economic profitability in relation to the targeted application sector. The first part focuses on the effect of conventional pretreatments (cutting and drying) and the effect of pulsed electric field pretreatment on caffeoylquinic acid content in biomass. The effect of adding an antioxidant solution during extraction is also investigated. Secondly, extraction optimization is carried out using dry or fresh biomass. The influence of factors such as temperature, solid/liquid ratio and solvent type were studied. In addition, extraction kinetics were performed to study kinetic parameters using empirical models. As the purity of the extract obtained is low, purification steps are needed. The thesis then focused on purifying the crude extract obtained using macroporous resins and liquid/liquid extraction. For resin purification, resin screening was carried out, followed by optimization of the purification operating conditions with the chosen resin. Models of adsorption phenomena are carried out to identify the limiting stages and the maximum adsorption capacity. For liquid/liquid extraction, green solvent screening is carried out on aqueous and hydro-ethanolic media, followed by optimization of operating conditions with the best solvent. The penultimate part of the thesis seeks to functionalize caffeoylquinic acids by esterification, starting with a model solution and then a real extract. Esterification conditions are optimized to increase both reaction speed and conversion rate. Esters with different chain lengths were obtained, and biological activities such as antioxidant activity and anti-UV properties were studied. Functionalization is also performed with real extract. A technico-economic study concludes the thesis, opening up prospects for the industrialization of the forced chicory roots valorization process