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Abstract Title:

Essential Oil from Clove Bud (Eugenia aromatica Kuntze) Inhibit Key Enzymes Relevant to the Management of Type-2 Diabetes and Some Pro-oxidant Induced Lipid Peroxidation in Rats Pancreas in vitro.

Abstract Source:

J Oleo Sci. 2015 May 21. Epub 2015 May 21. PMID: 25994557

Abstract Author(s):

Ganiyu Oboh, Ifeoluwa A Akinbola, Ayokunle O Ademosun, David M Sanni, Oluwatoyin V Odubanjo, Tosin A Olasehinde, Sunday I Oyeleye

Article Affiliation:

Ganiyu Oboh

Abstract:

The inhibition of enzymes involved in the breakdown of carbohydrates is considered a therapeutic approach to the management of type-2 diabetes. This study sought to investigate the effects of essential oil from clove bud onα-amylase and α-glucosidase activities. Essential oil from clove bud was extracted by hydrodistillation, dried with anhydrous Na2SO4 and characterized using gas chromatography-mass spectrometry (GC-MS). The effects of the essential oil on α-amylase and α-glucosidase activities were investigated.The antioxidant properties of the oil and the inhibition of Fe(2+) and sodium nitroprusside-induced malondialdehyde (MDA) production in rats pancreas homogenate were also carried out. The essential oil inhibited α-amylase (EC50=88.9 ml/L) and α-glucosidase (EC50=71.94 ml/L) activities in a dose-dependent manner. Furthermore, the essential oil inhibited Fe(2+) and SNP-induced MDA production and exhibited antioxidant activities through their NO*, OH*, scavenging and Fe(2+)- chelating abilities. The total phenolic and flavonoid contents of the essential oil were 12.95 mg/g and 6.62 mg/g respectively. GC-MS analysis revealed the presence of α-pinene, β-pinene, neral, geranial, gamma terpinene, cis-ocimene, allo ocimene, 1,8-cineole, linalool, borneol, myrcene and pinene-2-ol in significant amounts. Furthermore, the essential oils exhibited antioxidant activities as typified by hydroxyl(OH) and nitric oxide (NO)] radicals scavenging and Fe(2+)-chelating abilities. The inhibition of α-amylase and α-glucosidase activities, inhibition of pro-oxidant induced lipid peroxidation in rat pancreas and antioxidant activities could be possible mechanisms for the use of the essential oil inthe management and prevention of oxidative stress induced type-2 diabetes.

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Sayer Ji
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