UNIVERSI
TÄ
TS-
BIBLIOTHEK
P
ADERBORN
Anmelden
Menü
Menü
Start
Hilfe
Blog
Weitere Dienste
Neuerwerbungslisten
Fachsystematik Bücher
Erwerbungsvorschlag
Bestellung aus dem Magazin
Fernleihe
Einstellungen
Sprache
Deutsch
Deutsch
Englisch
Farbschema
Hell
Dunkel
Automatisch
Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist
gegebenenfalls
nur via VPN oder Shibboleth (DFN-AAI) möglich.
mehr Informationen...
Universitätsbibliothek
Katalog
Suche
Details
Zur Ergebnisliste
Ergebnis 2 von 133
Datensatz exportieren als...
BibTeX
Characteristics of proanthocyanidins in leaves of Chamaecyparis obtusa var. formosana as strong α‐glucosidase inhibitors
Journal of the science of food and agriculture, 2018-08, Vol.98 (10), p.3806-3814
Hsu, Chia‐Yun
Lin, Gong‐Min
Lin, Huan‐You
Chang, Shang‐Tzen
2018
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Hsu, Chia‐Yun
Lin, Gong‐Min
Lin, Huan‐You
Chang, Shang‐Tzen
Titel
Characteristics of proanthocyanidins in leaves of Chamaecyparis obtusa var. formosana as strong α‐glucosidase inhibitors
Ist Teil von
Journal of the science of food and agriculture, 2018-08, Vol.98 (10), p.3806-3814
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2018
Quelle
Wiley Blackwell Single Titles
Beschreibungen/Notizen
BACKGROUND In recent decades, there has been a growing demand for natural products with a view to using them as α‐glucosidase inhibitors for reducing postprandial hyperglycemia. In this study, the hot water extract (HWE) from Chamaecyparis obtusa var. formosana (Hayata) Rehder (Cupressaceae) leaves and its soluble fractions were screened for α‐glucosidase inhibition properties. The n‐butanol‐soluble fraction of HWE was further fractionated into 14 subfractions (B1–B14) using a Sephadex LH‐20 column. The α‐glucosidase‐inhibitory activities and proanthocyanidin contents of all subfractions were determined. The structural characteristics of proanthocyanidins in proanthocyanidin‐rich fractions were also elucidated. RESULTS HWE produced a dose‐dependent inhibition of α‐glucosidase at low dose. Its IC50 value was 1.4 µg mL−1, showing high inhibitory activity. Subfractions B7–B14 displayed powerful α‐glucosidase‐inhibitory activities with IC50 values ranging between 1 and 0.015 µg mL−1 and contained abundant proanthocyanidins exceeding 300 mg g−1. The proanthocyanidins with higher mean degree of polymerization (mDP), higher proportions of procyanidin dimer (A1 or A2) and (epi)afzelechin of extension units and a lower proportion of epicatechin of terminal units displayed high α‐glucosidase‐inhibitory activities. CONCLUSION Proanthocyanidins in HWE were viewed as potential natural α‐glucosidase inhibitors for decreasing postprandial hyperglycemia. The results indicated that specific structural characteristics of proanthocyanidins would be required for α‐glucosidase‐inhibitory activity. © 2018 Society of Chemical Industry
Sprache
Englisch
Identifikatoren
ISSN: 0022-5142
eISSN: 1097-0010
DOI: 10.1002/jsfa.8894
Titel-ID: cdi_proquest_miscellaneous_1989596985
Format
–
Schlagworte
alpha-Glucosidases - chemistry
,
alpha-Glucosidases - metabolism
,
antihyperglycemia
,
Butanol
,
Chamaecyparis - chemistry
,
Chamaecyparis obtusa
,
Degree of polymerization
,
Dimers
,
Epicatechin
,
Glucosidase
,
Glycoside Hydrolase Inhibitors - chemistry
,
Glycoside Hydrolase Inhibitors - isolation & purification
,
Humans
,
Hyperglycemia
,
Inhibition
,
Inhibitors
,
LC/MS/MS analysis
,
Leaves
,
Natural products
,
Organic chemistry
,
Plant Extracts - chemistry
,
Plant Extracts - isolation & purification
,
Plant Leaves - chemistry
,
Polymerization
,
Proanthocyanidins
,
Proanthocyanidins - chemistry
,
Proanthocyanidins - isolation & purification
,
thiolysis
,
α-Glucosidase
,
α‐glucosidase‐inhibitory activity
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von
bX