多聚磷酸盐提取甘薯果胶的物化特性

doi:10.7506/spkx1002-6630-201511016

食品科学

多聚磷酸盐提取甘薯果胶的物化特性

梁新红，孙俊良*，马汉军，王田林

河南科技学院食品学院，河南新乡 453003

出版日期:2015-06-15 发布日期:2015-06-07

Physicochemical Properties of Sweet Potato Pectin Extracted by Sodium Polyphosphate

LIANG Xinhong, SUN Junliang*, MA Hanjun, WANG Tianlin

School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China

Online:2015-06-15 Published:2015-06-07

摘要/Abstract

摘要：

对多聚磷酸钠法提取甘薯果胶的物化性质进行比较研究，并对该方法提取果胶进行凝胶层析，干燥后进行电镜观察及红外光谱分析。结果表明：多聚磷酸盐提果胶黏度为（27.46±0.46）mPa·s，酯化度为（58.22±1.46）%，胶凝度为（151.15±1.32）%，其值均高于盐酸提果胶，与苹果果胶相接近。对果胶进行凝胶层析，表明多聚磷酸盐提果胶的小分子质量成分分布较广。通过电镜观察，多聚磷酸盐法提取的果胶比酸提法提取的果胶结构更为蓬松。红外光谱显示，二者均具有果胶的特征官能团，吸收波数在指纹区略有差异。果胶物化特性分析表明，多聚磷酸盐提甘薯果胶更适合食品工业应用。

关键词: 多聚磷酸钠, 甘薯果胶, 物化特性

Abstract:

The physicochemical properties of sweet potato pectin extracted by sodium polyphosphate were investigated. The
results showed that the viscosity of sweet potato pectin extracted by sodium polyphosphate was (27.46 ± 0.46) mPa·s, the
degree of esterification (58.22 ± 1.46)%, and the degree of gelation (151.15 ± 1.32)%, which were all higher than those of
the pectin extracted by hydrochloric acid and similar to those of apple pectin. As observed under electron microscopy, the
pectin extracted by polyphosphate was fluffier than that extracted by hydrochloric acid. The infrared spectra showed that
both pectins extracted from sweet potato had typical functional groups of pectin, but the wavenumbers varied somewhat in
the fingerprint region. This study demonstrates that sodium polyphosphate-extractable pectin from sweet potato has a wider
range of application in the food industry.

Key words: sodium polyphosphate, sweet potato pectin, physicochemical properties

中图分类号:

TS202.3

梁新红，孙俊良*，马汉军，王田林. 多聚磷酸盐提取甘薯果胶的物化特性[J]. 食品科学, doi: 10.7506/spkx1002-6630-201511016.

LIANG Xinhong, SUN Junliang*, MA Hanjun, WANG Tianlin. Physicochemical Properties of Sweet Potato Pectin Extracted by Sodium Polyphosphate[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201511016.

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多聚磷酸盐提取甘薯果胶的物化特性

Physicochemical Properties of Sweet Potato Pectin Extracted by Sodium Polyphosphate

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