Oxidative stability assessment of Bauhinia purpurea seed oil in comparison to two conventional vegetable oils by differential scanning calorimetry and Rancimat methods

被引：32

作者：

Arain, Sarfraz ^{[1
]}

Sherazi, S. T. H. ^{[1
]}

Bhanger, M. I. ^{[1
]}

Talpur, Farah N. ^{[1
]}

Mahesar, S. A. ^{[1
]}

机构：

[1] Univ Sindh, Natl Ctr Excellence Analyt Chem, Jamshoro 76080, Pakistan

来源：

THERMOCHIMICA ACTA | 2009年 / 484卷 / 1-2期

关键词：

Differential scanning calorimetry; Oxidative stability index; Bauhinia purpurea seed oil; Rice bran oil; Cotton seed oil; AUTOXIDATION; QUALITY;

D O I：

10.1016/j.tca.2008.11.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The differential scanning calorimetry (DSC) and oxidative stability index (OSI) techniques were applied for evaluating the oxidative stability of Bauhinia purpurea, rice bran and cotton seed oil. The DSC cell temperature was adjusted at four isothermal temperatures (110, 120, 130, and 140 C) and oxidative DSC Curves were obtained under oxygen flow rate of 50 ml/min. During the oxidation reaction the increase of heat was observed with sharp exothermic curve. To was the oxidative induction time determined by the downward extrapolated DSC oxidative curve to time axis. The oxidation times (To) acquired from each oil demonstrated a good correlation, r > 0.99, with the oxidative stability measured by Rancimat method. DSC method is concluded to be useful by consuming shorter time with lesser amount of sample. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1 / 3

页数：3

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