Physicochemical properties of starch extracted from Colocasia esculenta (L.) Schott (Bun-long taro) grown in Hunan, China

文献类型: 外文期刊

第一作者: Zeng, Fan-Kui

作者: Zeng, Fan-Kui;Liu, Gang;Liu, Hong

作者机构:

关键词: Bun-long taro;Chinese taro;Physicochemical property;Taro starch

期刊名称:STARCH-STARKE ( 影响因子:2.741; 五年影响因子:3.112 )

ISSN: 0038-9056

年卷期: 2014 年 66 卷 1-2 期

页码:

收录情况: SCI

摘要: Taro (Colocasia esculenta (L.) Schott) starch was extracted from the corms of Bun-long taro cultivated in Hunan, China, and its physicochemical properties were determined and compared with those of potato and sweet potato starches. Bun-long taro starch had an irregular, polygonal shape, and grains were small in size: the surface-average granule diameter ranged from 1.3 to 2.2 mu m. Amylose content in Bun-long taro starch was 8.4 +/- 0.2%, determined by dual-wavelength colorimetry, and the starch had an A-type XRD pattern. The onset temperature (T-o), peak temperature (T-p), and completion temperature of gelatinization (T-c) associated with Bun-long taro starch were 73.6, 80.3, and 88.3 degrees C, respectively, determined by DSC. According to the Brabender amylograph paste viscosity analysis, the viscosity of Bun-long taro starch started increasing at 77 degrees C, which was higher than the temperatures at which the viscosities of potato starch and sweet potato starch started increasing.

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