Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 23 for “"proanthocyanidins"”.
-
Characterization of A-type Proanthocyanidins in Peanut Skins Using MALDI-TOF MS
… recent years, due to its high content of A-type proanthocyanidins. A-type proanthocyanidins have been believed to contribute to cranberries' anti-UTI (urinary tract infection) effect. In this study, we compared the A-type proanthocyanidins in cranberry and peanut skin crude extracts using …
-
Chemical characterization of proanthocyanidins in purple, blue, and red corn after different milling processes and their anti-inflammatory properties
Proanthocyanidins (PA) are oligomers and polymers of flavan-3-ol units, also known as condensed tannins. The monomers include catechin, epicatechin, and gallic acid esters. They have beneficial effects on several chronic diseases because of anti-inflammatory and antioxidant effects. These effects …
-
Anthocyanins and proanthocyanidins from blueberry and blackberry fermented beverages to reduce inflammation and type-2 diabetes: a comprehensive in vitro and in vivo evaluation
… diabetes, specifically anthocyanins (ANC) and proanthocyanidins (PAC), polymerized forms of ANC and other phenolics. Fermentation is a feasible way to increase phenolic content of berry juice products, and fermented products may be more bioactive than their unfermented counterparts, thus …
-
Preservation of Bioactive Compounds in Blueberry Fruit
… method capable of isolating oligomeric proanthocyanidins, test the proanthocyanidins in a number of in vitro biological assays including anticancer, antiadhesion, and antioxidant, and evaluate how bioactivity changes when blueberries are incorporated into processed food products. A novel …
-
EVALUATION OF YAK-KONG SOYBEAN (GLYCINE MAX) FOR ITS PHENOLICS AND METABOLITES WITH A FOCUS ON ATHEROSCLEROSIS PREVENTION
… phenolic composition analysis revealed that proanthocyanidins and isoflavones were the major phenolic groups in YK. Potential effect of proanthocyanidins and isoflavones on prevention of CVDs was further evaluated with their prospective metabolites using a monocyte-endothelial cell adhesion …
-
Development and Application of a High-Throughput Assay for Discovery of Starch Hydrolase Inhibitors
… of pancreatic a-amylase and sucrase. Moreover, proanthocyanidins in the extracts of root were also found to be major contributors to the inhibition of starch hydrolase. Phenylpropanoid sucrose ester compounds, smilaside A and smilaside D were isolated from extracts of the Smilax glabra rhizome. …
-
Untersuchungen zu Regulatoren der Flavonoidbiosynthese in Arabidopsis thaliana : eine Studie zu neuen Funktionen bekannter Proteinklassen
… be subdivided into flavonols, anthocyanins and proanthocyanidins. A majority of the transcription factors, which are involved in the developmental and tissue specific accumulation of these metabolites, is well known. In this work a number of regulators of the flavonoid metabolism was analysed in …
-
Feed Supplementation with Natural Extracts of Cranberry and its Efficacy on Campylobacter Colonization in Poultry
… Cranberry (Vaccinium macrocarpon) contain proanthocyanidins which have demonstrated antimicrobial activity against other food borne pathogens including E. coli, Salmonella, and Listeria. However, their ability to reduce Campylobacter in chickens has not been reported. The objective of this …
-
Antimicrobial Inhibitory Activities of Phenolic Extracts from Four Selected Soybean Hulls in Culture and Chicken Skin Model Systems, and Preliminary ACE-Inhibitory Activity
… lipids and polyphenols such as anthocyanidins, proanthocyanidins and isoflavones. The polyphenolic compounds in the hulls give them various colors such as black, brown, green, yellow or even a mottled appearance. Studies have reported different soybean varieties with varying total phenolic …
-
Application and Characterization of Bioactive Compounds in Peanut Skins, a Waste Product of Virginia Agriculture
… to contain mostly procyanidins but also proanthocyanidins. Since it is possible for multiple compounds to display the same molecular ion, multistep MS and retention time differences were utilized to tentatively identify the compounds based upon their fragmentation schemes. However, …
-
Understanding the molecular mechanism of postharvest seed coat darkening in pinto beans
… in pinto beans. P protein in a regulator of proanthocyanidins (PAs) biosynthesis. Using genetic complementation, transcript abundance, metabolite analysis, and inheritance study, I found a novel allele of P, Psd, whose partial loss-of-function slows down seed coat darkening by reducing the PA …
-
The Development and Application of Non- Targeted Mass Spectrometry Based Methods to Tea (Camellia Sinensis L.)
… was initially developed to detect and classify proanthocyanidins (PAs) in oolong and black tea extracts, resulting in several new PAs being identified. Two new LC-HRMS methods were then developed; the first utilising hydrophilic interaction liquid chromatography to resolve mostly polar primary …
-
Protective potential of fruits against diabetes and its complications
… changes was explored and high-molecular weight proanthocyanidins (PAC-h) inhibited expression of glucose-6-phosphatase in a dose dependent manner. In addition, anthocyanins from V. trilobum interacted with the PAC-h in an additive manner to inhibit expression of glucose-6-phosphatase in vitro. …
-
Enzymatic polymerisation in situ of depolymerised mimosa tannin applied to stabilisation of collagen
… for determining the degree of polymerisation of proanthocyanidins. The acid-catalysed depolymerisation method was scaled-up, with the addition of pyrogallol as a nucleophile trapping agent, and powdered depolymerised mimosa was obtained. Data show an increase in the monomeric content and decrease …
-
Bioexploration of wild Alaskan berries: From field screening to functional food
… of phytochemicals, including anthocyanins and proanthocyanidins, with known efficacy against metabolic disorders. Bioexploration represents a new paradigm under which bioactive preparations are screened in coordination with indigenous communities, to prepare for subsequent in-depth chemical and …
-
Genetic studies of phenotypic variants in the woodland strawberry, (Fragaria vesca)
… the production of flavonols, anthocyanins and proanthocyanidins. In an F2 segregating population, this deletion co-segregated with the phenotype. The third mutant line presented here displayed a curly leaf (cl) phenotype and was found to harbor a T-DNA insertion in a gene encoding a putative …
-
Genetics and Biochemistry of the Low Tannin Characteristic in Vicia faba L. and Development of a Molecular Marker for the zt2 Gene
… other pulses. The presence of condensed tannins (proanthocyanidins) in the testa of the seeds limits the use of faba bean both in the food and feed industries. Low tannin faba bean varieties are available for cultivation. The low tannin phenotype is controlled by two genes zt1 and zt2. Low tannin …
-
Determination of bioactive and potentially toxic compounds in food: raw material analysis and shelf life evaluation
… established that barley free flavan-3- ols and proanthocyanidins were four dimers and four trimers having (epi)catechin and/or (epi)gallocatechin (C and/or GC) subunits. Hydroxycinnamic acids and their derivatives were the main bound phenols in barley flours. The results obtained demonstrated …
-
Pronthocyanidin-Rich Cranberry-FractionInduced Alteration of Periodontal Pathogen Lipopolysaccharide Functions
… material (NDM), which was shown to be rich in proanthocyanidins; this has a suppressive effect on production of inflammatory cytokines mediated by LPS which are known to play a major destructive role in periodontal disease. In addition to the cytokines, stimulation of superoxide ions by the …
-
Flavonoid protection of cardiac cells against ischemia-reperfusion injury
… (44-58 %), epigallocatechin gallate (48%), proanthocyanidins (44%), and ascorbic acid (57-92%). A low concentration (10 µM) of catechin was more effective with a long-term (2 days) incubation time (64%), while a higher concentration (50 µM) could exert benefit even after 1 h pre-treatment …
Page 1 of 2