韩国种植的甘薯品种中淀粉的物理化学特性
Physicochemical Characteristics of Starch in Sweet Potato Cultivars Grown in Korea.
作者信息
Kim Hyun-Joo, Woo Koan Sik, Lee Hyeong-Un, Nam Sang Sik, Lee Byong Won, Kim Min Young, Lee Yu-Young, Lee Jin Young, Kim Mi Hyang, Lee Byoungkyu
机构信息
Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration, Gyeonggi 16613, Korea.
Research Policy Bureau, Rural Development Administration, Jeonbuk 55365, Korea.
出版信息
Prev Nutr Food Sci. 2020 Jun 30;25(2):212-218. doi: 10.3746/pnf.2020.25.2.212.
The objective of this study was to investigate the structural and physicochemical properties of starch from seven sweet potato cultivars (Shinyulmi, Sinjami, Hogammi, Jeonmi, Jinyulmi, Juhwangmi, and Pungwonmi). Jeonmi and Jinyulmi had amylose contents of 40.04% and 37.39%, respectively, whereas Juhwangmi and Pungwonmihad amylose contents of 30.95% and 32.37%, respectively. As a result of amylopectin polymerization, the seven cultivars were found to have high (>48%) contents of the degree of polymerization (DP) 13∼24 fraction, whereas the DP≥37 fraction content was <3.45%. The level of resistant starch was highest in Jeonmi (>30%) and lowest in Pungwonmi (<5%). The digestibility of Pungwonmi was greater than that of the other cultivars. Starch X-ray patterns did not differ among the cultivars. The results of this study provide useful information for the food industry regarding the application of sweet potato starches.
本研究的目的是调查7个甘薯品种（新羽蜜、新佳美、何伽美、全蜜、金羽蜜、朱黄蜜和凤元蜜）淀粉的结构和理化性质。全蜜和金羽蜜的直链淀粉含量分别为40.04%和37.39%，而朱黄蜜和凤元蜜的直链淀粉含量分别为30.95%和32.37%。由于支链淀粉聚合，发现这7个品种的聚合度（DP）13至24部分含量较高（>48%），而DP≥37部分含量<3.45%。抗性淀粉水平在全蜜中最高（>30%），在凤元蜜中最低（<5%）。凤元蜜的消化率高于其他品种。各品种间淀粉X射线图谱无差异。本研究结果为食品工业应用甘薯淀粉提供了有用信息。
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