Identification of α-glucosidase inhibitors from a new fermented tea obtained by tea-rolling processing of loquat (Eriobotrya japonica) and green tea leaves

Journal of the Science of Food and Agriculture

Volumn 90, Issue 9, 2010, Pages 1545-1550

  Toshima, Asami ^a   Matsui, Toshiro ^a   Noguchi, Mai ^a   Qiu, Ju ^a   Tamaya, Kei ^b   Miyata, Yuji ^c   Tanaka, Takashi ^d   Tanaka, Kazunari ^e  

^a KYUSHU UNIVERSITY   (Japan)

^b INDUSTRIAL TECHNOLOGY CENTER OF NAGASAKI   (Japan)

^c Higashisonogi Tea Branch   (Japan)

^d NAGASAKI UNIVERSITY   (Japan)

^e UNIVERSITY OF NAGASAKI   (Japan)

Author keywords

glucosidase; Antihyperglycaemic effect; Fermented tea; Loquat leaf; Maltase inhibition; Polyphenol

Indexed keywords

ALPHA GLUCOSIDASE; BENZOPYRAN DERIVATIVE; CATECHIN; ENZYME INHIBITOR; PHENOL DERIVATIVE; EPIGALLOCATECHIN-3-O-GALLATE EPIGALLOCATECHIN DIMER; GLYCOSIDASE INHIBITOR; TEA;

ARTICLE; CHEMICAL STRUCTURE; CHEMISTRY; COMPARATIVE STUDY; DRUG ANTAGONISM; ELECTROSPRAY MASS SPECTROMETRY; FERMENTATION; FOOD HANDLING; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; HYPERGLYCEMIA; ISOLATION AND PURIFICATION; LOQUAT; METHODOLOGY; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; PLANT LEAF; TEA; ANALOGS AND DERIVATIVES; CAMELLIA SINENSIS; ERIOBOTRYA; PROCEDURES;

ALPHA-GLUCOSIDASES; BENZOPYRANS; CAMELLIA SINENSIS; CATECHIN; CHROMATOGRAPHY, HIGH PRESSURE LIQUID; ENZYME INHIBITORS; ERIOBOTRYA; FERMENTATION; FOOD HANDLING; HYPERGLYCEMIA; MAGNETIC RESONANCE SPECTROSCOPY; MOLECULAR STRUCTURE; PHENOLS; PLANT LEAVES; SPECTROMETRY, MASS, ELECTROSPRAY IONIZATION; TEA; GLYCOSIDE HYDROLASE INHIBITORS;

ERIOBOTRYA JAPONICA; RATTUS;

EID: 77954378550     PISSN: 00225142     EISSN: 10970010     Source Type: Journal    
DOI: 10.1002/jsfa.3983     Document Type: Article

References (22)

1. Chiasson JL, Josse RG, Gomis R, Hanefeld M, Karasik A and Laakso M, Acarbose for prevention of type 2 diabetes mellitus: the STOPNIDDM randomized trial. Lancet 359:2072-2077 (2002).
2. Lee SS, Lin HC and Chen CK, Acylated flavonol monorhamnosides, α-glucosidase inhibitors, from Machilus philippinensis. Phytochemistry 69:2347-2353 (2008).
3. McDougall GJ, Shapiro F, Dobson P, Smith P, Blake A and Stewart D, Different polyphenolic components of soft fruits inhibit α-amylase and α-glucosidase. J Agric Food Chem 53:2760-2766 (2005).
4. Honda M and Hara Y, Inhibition of rat small intestinal sucrase and α-glucosidase activities by tea polyphenols. Biosci Biotechnol Biochem 57:123-124 (1993).
5. Matsui T, Tanaka T, Tamura S, Toshima A, Tamaya K, Miyata Y, et al, α-Glucosidase inhibitory profile of catechins and theaflavins. JAgric Food Chem 55:99-105 (2007).
6. Kim JA, Formoso G, Li Y, Potenza MA, Marasciulo FL, Montagnani M, et al, Epigallocatechin gallate, a green tea polyphenol, mediates NO-dependent vasodilation using signaling pathways in vascular endothelium requiring reactive oxygen species and Fyn. J Biol Chem 282:13736-13745 (2007).
7. Fukino Y, Ikeda A, Maruyama K, Aoki N, Okubo T and Iso H, Randomized controlled trial for an effect of green tea-extract powder supplementation on glucose abnormalities. Eur J Clin Nutr 62:953-960 (2008).
8. Miyata Y, Terai K, Tamaya K, Maeda M, Tokushima M, Hayashida S, et al, Fermented tea produced by rubbing starting tea leaves and Japanese medlar leaves and composition having extract contained in the fermented tea as the active ingredient. Japanese Patent PCT/JP2005/014129 (WO2006/013866) (2005).
9. Tamaya K, Matsui T, Noguchi M, Qiu J, Miyata Y, Tanaka T, et al, Suppression ofbloodglucoselevelbyanewfermentedteaobtained by tea-rolling processing of loquat (Eriobotrya japonica) and green tea leaves in disaccharide-loaded Sprague-Dawley rats. J Sci Food Agric 90:779-783 (2010).
10. Oki T, Matsui T and Matsumoto K, Evaluation of α-glucosidase inhibition by using an immobilized assay system. Biol Pharmaceut Bull 23:1084-1087 (2000).
11. Matsui T, Shimada M, Saito N and Matsumoto K, α-Glucosidase inhibition assay in an enzyme-immobilized amino-microplate. Anal Sci 25:559-562 (2009).
12. Tanaka T, Mine C, Inoue K, Matsuda M and Kouno I, Synthesis of the aflavin from epicatechin and epigallocatechin by plant homogenates and role of epicatechin quinone in the synthesis and degradation of theaflavin. J Agric Food Chem 50:2142-2148 (2002).
13. Matsui T, Ueda T, Oki T, Sugita K, Terahara N and Matsumoto K, Alphaglucosidase inhibitory action of natural acylated anthocyanins. 2. Alpha-glucosidase inhibition by isolated acylated anthocyanins. J Agric Food Chem 49:1952-1956 (2001).
14. Matsui T, Ueda T, Oki T, Sugita K, Terahara N and Matsumoto K, Alphaglucosidase inhibitory action of natural acylated anthocyanins. 1. Survey of natural pigments with potent inhibitory activity. J Agric Food Chem 49:1948-1951 (2001).
15. Matsui T, Ebuchi S, Fujise T, Abesundara KJM, Doi S, Yamada H, et al, Strong antihyperglycemic effects of water-soluble fraction of Brazilian propolis and its bioactive constituent, 3,4,5-tri-Ocaffeoylquinic acid. Biol Pharmaceut Bull 27:1797-1803 (2004).
16. Tanaka T, Inoue K, Betsumiya Y, Mine C and Kouno I, Two types of oxidativedimerizationof theblack tea polyphenol theaflavin.JAgric Food Chem 49:5785-5789 (2001).
17. Tanaka T, Miyata Y, Tamaya K, Kusano R, Matsuo Y, Tamaru S, et al, Increase of theaflavin gallates and thearubigins by acceleration of catechin oxidation in a new fermented tea product obtained by the tea-rolling processing of loquat (Eriobotrya japonica) and green tea leaves. J Agric Food Chem 57:5816-5822 (2009).
18. Nonaka G, Kawahara O and Nishioka I,Tannins and related compounds. A new class of dimeric flavan-3-ol gallates, theasinensins A and B, and proanthocyanidin gallates from green tea leaf. Chem Pharmaceut Bull 31:3906-3914 (1983).
19. Denzel K and Gross GG, Biosynthesis of gallotannins: enzymatic 'disproportionation' of 1,6-digalloylglucose to 1,2,6-trigalloylglucose and 6-galloylglucose by an acyltransferase from leaves of Rhus typhina L. Planta 184:285-289 (1991).
20. Tanaka T, Nonaka G and Nishioka I, Punicafolin, an ellagitannin from the leaves of Punica granatum. Phytochemistry 24:2075-2078 (1985).
21. Matsui T, Ogunwande I, Abesundara JMK and Matsumoto K, Antihyperglycemic potential of natural products. Mini-Rev Med Chem 6:109-120 (2006).
22. Toda M, Kawabata J and Kasai T, Inhibitory effects of ellagi- and gallotannins on rat intestinal α-glucosidase complexes. Biosci Biotechnol Biochem 65:542-547 (2001).