食品与发酵工业 >

2022 , Vol. 48 >Issue 10: 188 - 193

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.028121

研究报告

超高压对海带吸附性质的影响及其初步机理研究

  • 杨融 ,
  • 王一帆 ,
  • 王超 ,
  • 段翰英
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  • 1(暨南大学 国际学院,广东 广州,510632)
    2(暨南大学 理工学院,广东 广州,510632)
第一作者:杨融(本科生)和王一帆(本科生)为共同第一作者(段翰英讲师为通信作者,E-mail:dhyjnu@sina.com)

收稿日期: 2021-05-31

  修回日期: 2021-06-16

  网络出版日期: 2022-06-10

基金资助

广东省重点领域研发计划(2019B020212004)

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Effects of ultra-high pressure on absorption properties of kelp and its preliminary mechanism

  • YANG Rong ,
  • WANG Yifan ,
  • WANG Chao ,
  • DUAN Hanying
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  • 1(International School, Jinan University, Guangzhou 510632, China)
    2(College of Science＆Engineering, Jinan University, Guangzhou 510632, China)

Received date: 2021-05-31

  Revised date: 2021-06-16

  Online published: 2022-06-10

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摘要

为探讨超高压(ultra-high pressure,UHP)对海带吸附性质的影响,该文采用不同压力(300、450和600 MPa)和时间(5和10 min)处理片状海带(slice-kelp, S-K)和粉末海带(powder-kelp, P-K),研究处理前后海带的持水力(water holding capacity,WHC)、持油力(oil holding capacity,OHC)、葡萄糖(glucose adsorption capacity,GAC)含量和胆固醇吸附能力(cholesterol adsorption capacity,CAC)的变化,并通过分析膳食纤维(dietary fiber, DF)含量、组成以及微观结构初步推断其机理。结果表明,UHP处理后的P-K的WHC、OHC、GAC可分别最高增加为原来的2.31、2.33和11.33倍(P<0.05)。CAC略有增加但无显著变化。随着处理压力和时间的增加,WHC及OHC逐渐提高,而GAC及CAC随压力的增加呈现先增加后减小的趋势。S-K的各种吸附性能都较差,UHP对其影响也并不明显。经进一步分析,UHP处理后海带的总DF含量最高可增加到原来的1.21倍,处理5 min的样品中不溶性DF可显著增加至1.10倍,处理10 min的样品中可溶性DF含量可显著增加至1.63倍(P<0.05)。扫描电镜结果显示,UHP处理后的P-K表面粗糙、结构疏松,随压力增加可发生聚集现象,从而影响其吸附性。

关键词： 海带; 膳食纤维; 超高压; 吸附性质; 微观结构

本文引用格式

杨融 , 王一帆 , 王超 , 段翰英 . 超高压对海带吸附性质的影响及其初步机理研究[J]. 食品与发酵工业, 2022 , 48(10) : 188 -193 . DOI: 10.13995/j.cnki.11-1802/ts.028121

Abstract

In this study, slice kelp (S-K) and powder-kelp (P-K) were treated with different pressures (300, 450 and 600 MPa) and time (5 and 10 min) in order to explore the effects of ultra-high pressure (UHP) treatments on kelp absorbability. The changes of water holding capacity (WHC), oil holding capacity (OHC), glucose adsorption capacity (GAC), cholesterol adsorption capacity (CAC) were compared to further infer the preliminary mechanism, dietary fiber (DF) content, composition and microstructure of kelp. The results showed that the WHC, OHC, and GAC of P-K after UHP treatment were significantly increased by 2.31, 2.33 and 11.33 times, respectively (P<0.05). CAC increased slightly but had no significant changes. With the increase of pressure and time, WHC and OHC gradually increased, however, GAC and CAC were first increased and then decreased. The adsorption properties of S-K were poor and the effect of UHP on it was not obvious. In further analysis, the total DF content of kelp after UHP treatment was significantly increased, and the insoluble and soluble DF contents were significantly increased after treatment for 5 and 10 min, respectively (P<0.05). Moreover, the results of scanning electron microscopy showed that the surface of UHP treated P-K was rough and the structure was loose. With the increase of pressure, the aggregation phenomenon of P-K would occur, which affected its absorbability.

Key words： kelp; dietary fiber; ultra-high pressure; absorption properties; structural properties

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