scholarly journals Bioconversion of Flavonoid Glycosides from Hippophae rhamnoides Leaves into Flavonoid Aglycones by Eurotium amstelodami

2019 ◽  
Vol 7 (5) ◽  
pp. 122 ◽  
Author(s):  
Qiuya Gu ◽  
Guoliang Duan ◽  
Xiaobin Yu
Keyword(s):  
Antioxidative Activity ◽  
Hippophae Rhamnoides ◽  
Flavonoid Glycosides ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Flavonoid Aglycones ◽  
Hippophaë Rhamnoides ◽  
Tea Industry ◽  
Functional Factors ◽  
Flowering Process

The flowering process has been reported to play crucial roles in improving the flavor and efficacy of fermented tea. Hippophae rhamnoides leaves containing many beneficial ingredients are a suitable plant source for tea processing. In this study, we isolated a β-glucosidase-producing fungus Eurotium amstelodami BSX001 from the fermented tea and used Hippophae rhamnoides leaves (HRL) as a substrate to explore the detailed process of bioconversion of some important functional factors. The results show that the contents of total phenolic compounds and flavonoids increased significantly after seven days, especially flavonoid aglycones (e.g., quercetin, kaempferol, and isorhamnetin). Such compounds greatly enhance the antioxidative activity of fermented products. Metabolic analysis of the standard compounds (rutin, quercetin-3-glucoside, kaempferol-3-glucoside, quercetin, isorhamnetin-3-glucoside, isorhamnetin, and kaempferol) further confirmed the effective biotransformation by E. amstelodami. Mechanisms of the bioconversion could be involved in deglycosylation, dihydroxylation, and O-methylation. Our findings expand the understanding of tea fermentation process and provide further guidance for the fermented tea industry.

scholarly journals Changes in content of major phenolic compounds during leaf development of sea buckthorn (Hippophaë rhamnoides L.)

2014 ◽  
Vol 23 (3) ◽  
pp. 207-219 ◽  
Author(s):  
Anne Morgenstern ◽  
Anders Ekholm ◽  
Petra Scheewe ◽  
Kimmo Rumpunen
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Sea Buckthorn ◽  
Hippophae Rhamnoides ◽  
Total Phenolic ◽  
Strongly Correlated ◽  
Total Phenolic Compounds ◽  
Hydrolyzable Tannins ◽  
Hippophaë Rhamnoides ◽  
Hippophae Rhamnoïdes L

Content of total phenolic compounds and antioxidant capacity (FRAP) were investigated in the leaves of three sea buckthorn (Hippophaë rhamnoides L.) cultivars: ‘Otradnaja’, ‘Gibrid Pertjika’ and ‘Ljubitelskaja’, at different dates. In addition, major phenolic compounds (catechin, kaempferol, quercetin, epigallocatechin, kaempferol-3-O-glucoside, quercetin-3-O-galactoside, isorhamnetin-3-O-glucoside, rutin, gallic acid, procyanidin monomer glycoside, procyanidin dimer aglycone and hydrolyzable tannins I–III) were determined in ‘Ljubitelskaja’. Antioxidant capacity and the content of total phenolic compounds fluctuated during April, May and June, and then increased until the end of July, when the highest values were observed. Total phenolic compounds were strongly correlated with FRAP. Levels were generally higher in ‘Ljubitelskaja’ than in ‘Otradnaja’ and ‘Gibrid Pertjika’. In ‘Ljubitelskaja’, hydrolyzable tannins I–III occurred in higher amounts than did any of the other studied phenolic compounds. The developmental stage of the leaves (harvesting date) had a strong influence on content of phenolic compounds and should be carefully considered when harvesting sea buckthorn leaves for different purposes.

Polyphenols in Representative Teucrium Species in the Flora of R. Macedonia: LC/DAD/ESI-MSn Profile and Content

2014 ◽  
Vol 9 (2) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Ilija Mitreski ◽  
Jasmina Petreska Stanoeva ◽  
Marina Stefova ◽  
Gjoshe Stefkov ◽  
Svetlana Kulevanova
Keyword(s):  
Phenolic Compounds ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Flavonoid Glycosides ◽  
Total Phenolic ◽  
Phenylethanoid Glycosides ◽  
Systematic Analysis ◽  
Flavonoid Aglycones ◽  
Phenolic Profiles ◽  
Polyphenolic Profile

In the present work, the polyphenolic profile and content of four Teucrium species ( T. chamaedrys L., T. montanum L., T. polium L., T. scordium L.) from the Macedonian flora were examined. A LC/DAD/ESI-MS n chromatographic method was optimized and 31 phenolic compounds were identified, quantified and classified into four groups: hydroxycinnamic acid derivatives (2), phenylethanoid glycosides (12), flavonoid glycosides (11) and flavonoid aglycones (6). The total phenolic content (mg/g dry herb) ranged from 28.2 ( T. montanum), 30.9 ( T. scordium), 35.1 ( T. polium) to 52.1 ( T. chamaedrys). Phenylethanoid glycosides were the predominant group of polyphenols in the studied samples contributing 60% of the total phenolic content for T. polium and T. scordium and around 90% for T. montanum and T. chamaedrys. The systematic analysis for identification and quantification of all present phenolic compounds contributes to the chemotaxonomy of the investigated Teucrium species and to the valorization based on their phenolic profiles and content.

Flavonoid glycosides from seeds of Hippophae rhamnoides subsp. Sinensis with α-glucosidase inhibition activity

Fitoterapia ◽  
2019 ◽  
Vol 137 ◽  
pp. 104248 ◽  
Author(s):  
Rui Li ◽  
Qing Wang ◽  
Menghao Zhao ◽  
Peiming Yang ◽  
Xiao Hu ◽  
...  
Keyword(s):  
Hippophae Rhamnoides ◽  
Flavonoid Glycosides ◽  
Inhibition Activity ◽  
Hippophaë Rhamnoides

scholarly journals Main Agro-Morphological and Biochemical Berry Characteristics of Wild-Grown Sea Buckthorn (Hippophae rhamnoides L. ssp. caucasica Rousi) Genotypes in Turkey

2021 ◽  
Vol 13 (3) ◽  
pp. 1198
Author(s):  
Gülçe Ilhan ◽  
Muttalip Gundogdu ◽  
Ksenija Karlović ◽  
Vesna Židovec ◽  
Aleš Vokurka ◽  
...  
Keyword(s):  
Growth Habit ◽  
Great Variability ◽  
Sea Buckthorn ◽  
Hippophae Rhamnoides ◽  
Total Phenolic ◽  
Total Anthocyanin ◽  
Hippophaë Rhamnoides ◽  
Dark Orange ◽  
Hippophae Rhamnoïdes L ◽  
Light Orange

Sea buckthorn (Hippophae rhamnoides L. ssp. caucasica Rousi) is one of the most important wild edible fruits, grown in Turkey for centuries without any chemical treatments. The plant is extremely resistant to adverse environmental conditions. In this study, the main agro-morphological and biochemical berry traits and, to a lesser extent, other plant morphological traits of 10 sea buckthorn genotypes sampled from the eastern Anatolia (Sivas province) region were assessed. Among the 10 genotypes, five of them presented a shrub growth habit, whereas five of them presented tree growth habit, with leaf area ranging from 2.56 to 4.22 cm2. The majority of genotypes had an oblong berry shape with variable berry skin color ranging from dark orange to orange, light orange, and yellow. The weight of 100 berries varied from 13.85 to 23.87 g, while juice yield and vitamin C content was found to be 44.87–57.15% and 37.45–62.85 mg/100 g fresh berry base, respectively. Soluble solid content (SSC) was in the range of 12.56–14.67%. The genotypes exhibited a great variability in total anthocyanin content (from 9.1 to 38.7 mg/L), with relatively dark-orange sea buckthorn berries containing more anthocyanin than orange, light-orange, and yellow berries. Linoleic acid was the main fatty acid detected in the pulp of sea buckthorn berries, ranging from 24.11% to 36.37%, depending on the genotype. Investigated genotypes proved also to be rich in total phenolic content, showing at the same time great variability in this trait. The results obtained from the relatively limited number of genotypes show promising traits for further valorization of both horticultural and nutritional traits, suggesting potentially even higher variability, if more genotypes are going to be considered in the future.

scholarly journals The antioxidant capacity of sea buckthorn (Hippophae rhamnoides L.) berries depends on the genotype and harvest time

2014 ◽  
Vol 20 (3-4) ◽  
Author(s):  
N. Makovics-Zsohár ◽  
A. Hegedűs ◽  
É. Stefanovits-Bányai ◽  
R. Rédei ◽  
N. Papp
Keyword(s):  
Antioxidant Capacity ◽  
Sea Buckthorn ◽  
Hippophae Rhamnoides ◽  
Total Phenolic ◽  
Harvest Time ◽  
Antioxidant Power ◽  
Phenolic Contents ◽  
Hippophaë Rhamnoides ◽  
Hippophae Rhamnoïdes L

Berries of sea buckthorn (Hippophae rhamnoides L.) are characterized by increasing popularity due to their presumable healtheffects. The aim of this study was to compare the antioxidant capacity and total polyphenolic content in the berries of six Hungarian grown sea buckthorn genotypes and characterize the genetic variability in this trait. The harvest time of sea buckthorn berries affects the antioxidant capacity and total phenolic contents in berries of three popular cultivars of German origin. Berries harvested in October had higher antioxidant capacity compared with those harvested one month later. The extent of the difference was genotype-specific. Our analysis revealed a nearly 3-fold difference between the lowest and highest antioxidant capacities of the 6 tested genotypes with ‘Leikora’ showing the highest ferric reducing antioxidant power and total phenolic content. The TEAC values ranged between 1.76 and 3.13 mmol Trolox/100g fresh weight with Pető 1 and ‘Frugana’ having the highest values. The results presented in this study demonstrated that Hippophae rhamnoides berries possess in vitro antioxidant activity strongly determined by genotype but also influenced by harvest time.

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