scholarly journals Extraction of rutin and quercetin from Tartary buckwheat grains, hydrothermally treated at different temperatures

Fagopyrum ◽  
2020 ◽  
Vol 37 (2) ◽  
pp. 37-40
Author(s):  
Filip Brajčič ◽  
Patricia Luštek ◽  
Tinara Šuštarič ◽  
Janja Pust
Keyword(s):  
Nutritional Quality ◽  
Tartary Buckwheat ◽  
Control Group ◽  
Natural Conditions ◽  
Degrading Enzymes ◽  
Grain Structures ◽  
Different Temperatures ◽  
Rutin And Quercetin ◽  
Potential Substrate

Tartary buckwheat grains were hydrothermally treated to establish the conditions under which rutin remains in the grain. Tartary buckwheat grains were soaked in water at the temperatures 51 °C, 61 °C, 70 °C, 75 °C, 80 °C, 85 °C, 90 °C, 93 °C, 97 °C and 99 °C, and a control group at 21 °C. During 20 minutes soaking at 51 °C or 61 °C the concentration of rutin decreased. This effect was mostly pronounced by soaking at 70 °C and 75 °C, where instead of missing amount of rutin, some quercetin appeared. After soaking at 80 °C, 85 °C, 90 °C, 93 °C, 97 °C and 99 °C concentration of rutin was not significantly different in comparison to the concentration of rutin after soaking 20 minutes at 21°C. It is suggested that exposure to water at 21°C is similar to natural conditions, where rutin degrading enzymes remain mainly inactive and in grain separated from its potential substrate. Further is suggested that at the soaking temperatures 51 °C, 61 °C, 70 °C and 75 °C, grain structures are partly degraded and rutin degrading enzymes got contact to the substrate. By soaking at 80 °C, 85 °C, 90 °C, 93 °C, 97 °C and 99 °C, rutin degrading enzymes lose their activity. Thus wet treatment of Tartary buckwheat grains for 20 minutes at temperature at 80 °C or above, this threshold is enough to preserve the content of rutin in the samples. This is of importance for nutritional quality of Tartary buckwheat food products.

scholarly journals Rutin and quercetin in common and Tartary buckwheat flour and dough

Fagopyrum ◽  
2021 ◽  
Vol 38 (2) ◽  
pp. 43-53
Author(s):  
Blanka Vombergar
Keyword(s):  
Direct Contact ◽  
Dry Matter ◽  
Tartary Buckwheat ◽  
Common Buckwheat ◽  
Degrading Enzymes ◽  
Grain Structures ◽  
Rutin And Quercetin ◽  
Buckwheat Flour

The concentration of flavonoids rutin and quercetin in flours of common and Tartary buckwheat was investigated. In Tartary buckwheat, concentration of rutin is much higher compared to common buckwheat. In Tartary buckwheat it was measured 1.17 to 1.75% rutin in dry matter, while in common buckwheat it was only 0.003%. After direct contact of buckwheat flour with water, different biochemical activities in Tartary buckwheat developed with rutin. After the time (5 minutes or two hours), the concentration of rutin is in the flour-water mixtures much lowered, and quercetin appeared. However, after quick initial changes, some rutin remained in flour-water mixtures even after 24 hours. In any way, after 24 hours of direct contact of flour particles with water, the concentration of quercetin is higher than that of rutin. It is established that the concentration of rutin in flour-water mixtures is the result of two processes. One is the release of rutin from grain structures and its dissolving in water, and the second is the release of rutin degrading enzymes from grain structures and their activity in solution. 

scholarly journals Evaluation of the Effect of Synbiotic in Piglets’ Diet on the Nutritional Quality of Pork

2021 ◽  
Vol 24 (2) ◽  
pp. 67-75
Author(s):  
Mihaela Saracila ◽  
Arabela Elena Untea ◽  
Tatiana Dumitra Panaite
Keyword(s):  
Nutritional Quality ◽  
Crude Protein ◽  
Lipid A ◽  
Thiobarbituric Acid ◽  
Control Group ◽  
Thiobarbituric Acid Reactive Substances ◽  
Conventional Diet ◽  
Organic Zn ◽  
Experimental Group

Abstract The purpose of the study was to increase the nutritional quality of pork, and to investigate the effect of the synbiotic on the oxidative stability of lipid. A 4 weeks experiment was performed on 8 weaned piglets (age 47 days, TOPIGS), divided into 2 groups (C, E). The control group (C) received a conventional diet, while the experimental group (E) included a diet supplemented with organic Zn and 10 g/kg synbiotic mixture. The productive parameters were evaluated. After slaughtered, muscle (tenderloin, shoulder, loin, ham and belly) and organs samples (liver, spleen and kidney) were collected. The muscle and organs samples were analysed regarding the proximate chemical analysis (dry matter, crude protein, crude fat, and ash). The antioxidant capacity and thiobarbituric acid reactive substances (TBARS) were performed on shoulder and ham samples at first day of the trial, 4 and 7 days after refrigeration. The crude fat determined in the loin samples, recorded a significant increase in the E group compared to the C group. The ash was higher in the shoulder samples from C group than in E group. At 7 days of refrigeration, the MDA concentration was significantly lower in the shoulder and ham samples from E group than those from C group. The conclusion was that the diet supplemented with organic Zn and 10 g/kg synbiotic mixture contributed to the delay of the lipid oxidation process of the shoulder and ham samples during the refrigeration period.

scholarly journals The Influence of Dehulling on the Nutritional Quality of Lupine Seeds (Lupinus albus L.) and the Effect of Their Use in the Feed of Laying Quails on the Live Performance and Quality of Eggs

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2898
Author(s):  
Dănuţ Ioan Struţi ◽  
Andrea Bunea ◽  
Ioan Mircea Pop ◽  
Tudor Andrei Păpuc ◽  
Daniel Pantea Mierliţă
Keyword(s):  
Soybean Meal ◽  
Nutritional Quality ◽  
Egg Production ◽  
Egg Quality ◽  
Lupinus Albus ◽  
Atherogenic Index ◽  
Control Group ◽  
Live Performance ◽  
Quality Indices

Lupinus albus seeds from low-alkaloid varieties are a valuable alternative source of protein for reducing the dependence on soybean meal for the feeding of monogastric animals. Therefore, the aim of this research was to evaluate the dehulling influence of lupine seeds (L. albus, cv. Amiga) and the effect of their use in the laying quails feed on live performance and egg quality. A total of 200 laying quails (Coturnix japonica), with an age of 10 weeks, were randomly assigned to five experimental groups (five replicates/group). Each group was randomly assigned to one of five dietary treatments: the control group (C) diet was based on soybean meal, while the experimental groups received either 200 g/kg (WLS20) or 250 g/kg (WLS25) of whole lupine seeds in their diets, or 200 g/kg (DLS20) or 250 g/kg (DLS25) of dehulled lupine seeds in their diets. The results show that by dehulling the lupine seeds, the nutritional value of the seeds increased. The use of dehulled lupine seeds in the diet of laying quails did not affect the live performance (egg production, feed intake, feed conversion ratio), yolk cholesterol content, and physico-chemical quality indices of the eggs, compared with control. The presence of dehulled lupine seeds in the diet improved the nutritional quality of the yolk lipids because of the increase in the content of polyunsaturated fatty acids. Thus, the lipid quality indices of the yolk became more favorable to consumer health because of an increase in the h/H ratio (hypocholesterolemic/Hypercholesterolemic FA) and a decrease in the atherogenic index and thrombogenic index values. The higher content in carotenoids also contributed to the higher nutritional quality of the eggs obtained by lupine utilization. In conclusion, dehulling of lupine seeds had a positive influence on the nutritional quality of the seeds, the live performance of quails, and the quality of eggs.

scholarly journals Chemical composition and nutritional quality of tilapia muscle tissue using the feed additive Enzimsporin

2021 ◽  
Vol 37 ◽  
pp. 00105
Author(s):  
Tatiana Maslova ◽  
Tatiana Kulakova
Keyword(s):  
Chemical Composition ◽  
Muscle Tissue ◽  
Nutritional Quality ◽  
Nile Tilapia ◽  
Raw Materials ◽  
Fatty Infiltration ◽  
Feed Additive ◽  
Control Group ◽  
Experimental Group

The production of ecologically clean fish products is in demand in the food market. As a result of the research, the nutritional quality and chemical composition of the muscle tissue of the Nile tilapia (Oreochromis niloticus L.) were evaluated using the pro-biotic additive Enzimsporin. A valuable quality of Nile tilapia meat is its high protein content. In the muscle tissue, the maximum amount of protein was 80.4%, in the yearlings of the 1st experimental group, which is 7.51% (P ≥ 0.99) higher than in the control group. Yearlings of the 2nd experimental group outperformed their peers from the control group by 4.8% (P ≥ 0.95). Its amount in fry of Nile tilapia varied from 72.27–72.73% in the experimental groups to 74.71% in the control group. The fat content in fry varied from 9.55% in the control to 12.19% in the fish of the 2nd experimental group. The amount of lipids was the highest in the control variant of Nile tilapia yearlings (11.48%), which is 6.48% more than in the 1st experimental group and by 4.48% more than that in the 2nd experimental group. The lipid-protein coefficient (0.06-0.09) of the experimental groups characterizes the meat as less tender, but high in protein, possessing lipotropic properties that protect the liver from fatty infiltration. The study of nutritional value and functional and technological properties shows that tilapia meat can be attributed to highly saturated food raw materials and used to obtain dietary products.

scholarly journals Effect Of Temperature And Storage Time On The Nutritional Quality Of Olive Drupes: A Case Study

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Enrico Finotti ◽  
Loretta Gambelli ◽  
Gioia Meysem Mili ◽  
Gabrielle Lo Feudo ◽  
Cinzia Benincasa ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Sensory Analysis ◽  
Nutritional Quality ◽  
Storage Time ◽  
Quality Parameters ◽  
Effect Of Temperature ◽  
Different Temperatures ◽  
And Storage

In this study we evaluated the effect of temperature and time storage on the quality parameters of mono cultivar olive oil drupes. In particular, analyses of total free phenols, fatty acids, lipophilic and hydrophilic antioxidant capacity, sensory analysis, at different temperatures and different times of post harvest storage, were performed. All data obtained have been singularly processed by Functional Mathematical Index (FMI).

scholarly journals Improved Growth and Nutritional Quality of Pangas Catfish, Pangasius hypophthalmus (Sauvage, 1878) by Enzyme Supplementation

2020 ◽  
Vol 20 (2) ◽  
pp. 133-142
Author(s):  
Palash Bala ◽  
Ghulam Mustafa ◽  
Shankar Chandra Mandal
Keyword(s):  
Growth Performance ◽  
Nutritional Quality ◽  
Average Daily Gain ◽  
Control Group ◽  
Hepatosomatic Index ◽  
Fish Diet ◽  
Feed Conversion ◽  
Exogenous Enzyme ◽  
Enzyme Supplementation

Pangas catfish, Pangasius hypophthalmus is one of the most widely cultured fish species in Asia. The growth and flesh quality of fish depend largely on the quality and composition of feed. Inclusion of exogenous enzyme can improve the palatbility and digestibility of feed. However, there is a lack of research on the use of exogenous enzymes in fish diet for improved growth and nutritional quality of fish. Thus, in the current study, the effects of enzyme inclusion in fish diet were evaluated using pangas catfish as an experimental animal. The study was conducted in a laboratory condition with a flow-through system where 12 plastic tanks with 750 L water capacity were used where the tanks were grouped randomly. Each tank was stocked with 15 fingerlings of pangas catfish. Three different concentrations (3, 4 and 5% of the total feed) of Zymex, a commercially available ulti-enzyme were used for treatment groups along with a control group with no enzyme supplementation. The length-weight relationship of the experimental fish using the initial and final data was established where a significantly positive relationship was found (P<0.05). Growth performance including condition factor, specific growth rate and feed conversion ratio was significantly improved by 3% enzyme supplementation (P<0.05). Average daily gain did not vary significantly between treatments. Three percent enzyme supplementation in the diet significantly increased crude protein and lipid contents and reduced moisture content (P<0.05). Significantly higher ash content was found in fish fed both 3 and 5% enzyme contained diet (P<0.05). In case of body indices, 5% enzyme supplementation provided significantly higher viscerosomatic index (P<0.05) while 3% provided significantly higher flesh yield (P<0.05). However, hepatosomatic index did not vary significantly between treatments. From the findings it is concluded that enzyme supplementation at 3% of the diet can improve the growth performance and nutritional quality of pangas catfish.

scholarly journals Effects of Urea Supplementation On The Nutritional Quality And Microbial Community of Alfalfa (Medicago Sativa L.) Silage

2021 ◽  
Author(s):  
Zhenping Hou ◽  
Xia Zheng ◽  
Xuelei Zhang ◽  
Qing Chen ◽  
Duanqin Wu
Keyword(s):  
Microbial Community ◽  
Medicago Sativa ◽  
Microbial Communities ◽  
Nutritional Quality ◽  
Diversity Indices ◽  
Control Group ◽  
Medicago Sativa L ◽  
Alfalfa Silage ◽  
Silage Process

Abstract The objectives of this study were to evaluate the contribution of urea on the nutritional quality and microbial community of ensiled alfalfa (Medicago sativa L.). Alfalfa silage was control group without urea (AL), supplementation with 0.5 % urea (AU1), or supplementation with 1 % urea (AU2). The silage tanks were opened and sampled after silage at 0, 15, 30, and 60 d. Results showed that AU2 had higher pH, ratio of NH3-N/TN and CP content than those in AL and AU1 while AU1 had higher ADF than that in AL and AU2 after 15 d silage. Richness and diversity indices of microbial communities in silage were no significant differences among AL, AU1 and AU2 group. Proteobacteria (58.23%) and Firmicutes (40.95%) were the predominant phylum in three groups during the silage process. The percent of community abundances on genera level of Enterobacteriaceae (37.61%) and Klebsiella (41.78%) in AL were a little higher than those in AU1 (30.39%, 25.02%) and AU2 (33.48%, 26.92%). These results showed that silage with urea alone could not improve the quality of alfalfa.

Epistemic and relational conflicts in sharing identical vs. complementary information during cooperative learning

2002 ◽  
Vol 61 (3) ◽  
pp. 139-151 ◽  
Author(s):  
Céline Darnon ◽  
Céline Buchs ◽  
Fabrizio Butera
Keyword(s):  
Cooperative Learning ◽  
Social Comparison ◽  
Positive Relationship ◽  
Learning Task ◽  
Control Group ◽  
Complementary Information ◽  
Relational Conflict ◽  
The Social ◽  
The University

When interacting on a learning task, which is typical of several academic situations, individuals may experience two different motives: Understanding the problem, or showing their competences. When a conflict (confrontation of divergent propositions) emerges from this interaction, it can be solved either in an epistemic way (focused on the task) or in a relational way (focused on the social comparison of competences). The latter is believed to be detrimental for learning. Moreover, research on cooperative learning shows that when they share identical information, partners are led to compare to each other, and are less encouraged to cooperate than when they share complementary information. An epistemic vs. relational conflict vs. no conflict was provoked in dyads composed by a participant and a confederate, working either on identical or on complementary information (N = 122). Results showed that, if relational and epistemic conflicts both entailed more perceived interactions and divergence than the control group, only relational conflict entailed more perceived comparison activities and a less positive relationship than the control group. Epistemic conflict resulted in a more positive perceived relationship than the control group. As far as performance is concerned, relational conflict led to a worse learning than epistemic conflict, and - after a delay - than the control group. An interaction between the two variables on delayed performance showed that epistemic and relational conflicts were different only when working with complementary information. This study shows the importance of the quality of relationship when sharing information during cooperative learning, a crucial factor to be taken into account when planning educational settings at the university.

Results of osteopathic correction of patients with post-traumatic coccygodynia

2019 ◽  
pp. 19-27
Author(s):  
Yu. V. Antonova ◽  
A. M. Iskandarov ◽  
I. B. Mizonova
Keyword(s):  
Quality Of Life ◽  
Emotional State ◽  
Pain Syndrome ◽  
Control Group ◽  
Life Questionnaire ◽  
Treatment Area ◽  
Diffi Cult ◽  
Osteopathic Treatment ◽  
Post Traumatic

Introduction.Coccygodynia is a multidisciplinary disease which is diffi cult to treat. It seriously limits the ability to work and signifi cantly affects the quality of life of patients. The study of somatic dysfunctions in patients with coccygodynia and the analysis of the results of osteopathic treatment of such patients makes it possible to justify the necessity of osteopathic correction of coccygodynia.Goal of the study— to determine the structure of the leading somatic dysfunctions in patients with coccygodynia and to study the effectiveness of osteopathic treatment of this pathology.Materials and methods.The study involved 44 patients from 25 to 65 years old, randomly divided into two groups. The main group of 24 people (20 women and 4 men) received osteopathic treatment, in accordance with the identifi ed leading somatic dysfunctions. Patients of the control group (16 women and 4 men) were treated locally with soft manual techniques (the treatment area was limited by the pelvic region). In order to assess the results of the treatment, we examined the intensity of the pain syndrome and the psycho-emotional state of patients. The severity of the pain syndrome was assessed in accordance with the visual analogue scale (VAS). The psycho-emotional state (with physical and mental components) was assessed with the help of the SF-36 quality of life questionnaire.Results.Somatic dysfunctions typical for patients with coccygodynia have been identifi ed. Osteopathic treatment has proven to be more effective in comparison with local manual therapy of coccygodynia both in early periods and in 3 months after the end of the treatment course.Conclusion.Osteopathic treatment of post-traumatic coccygodynia is effective, and can be recommended for treatment of such patients.

Sign in / Sign up

Export Citation Format

Share Document