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海藻酸钠含水凝胶球的制备及特性表征

2021-01-10郭曼妮陈展俊吴欣玥施乔馨邝艺王兰英

食品安全导刊·中旬刊 2021年11期

郭曼妮 陈展俊 吴欣玥 施乔馨 邝艺 王兰英

摘 要:为有效减少一次性塑料瓶的使用,替代饮用水的塑料瓶包装,本文利用离子交联及反向球化技术制备海藻酸钠含水凝胶球,在此基础上结合质构仪测试、感官测评,研究不同配比的海藻酸钠与乳酸钙及其交联时间对含水凝胶球刺穿强度和水分透过率的影响,得出了最佳制备参数为:海藻酸钠∶水=1∶90,乳酸钙∶水=1∶45,反应交联时间4 min。在该参数下制备的含水凝胶球具有较好的弹性,刺穿强度以及感官风味。

关键词:海藻酸钠;凝胶球;制备;特性表征

Preparation and Characterization of Sodium Alginate Hydrogel Beads

GUO Manni1, CHEN Zhanjun1, WU Xinyue1, SHI Qiaoxin1, KUANG Yi2, WANG Lanying1*

(1.Zhuhai College of Science and Technology School of Pharmacy and Food Science, Zhuhai 519000;2.Zhuhai College of Science and Technology Computer Institute, Zhuhai 519000, China)

Abstract: In order to effectively reduce the use of disposable plastic bottles, sodium alginate hydrogel beads were prepared by the ionic cross-linking reaction and reverse spherification technology. On this basis, combined with texture analyzer test and sensory evaluation, the effects of different ratios of sodium alginate and calcium lactate and their crosslinking time on the penetration strength and water permeability of hydrogel beads were studied. The optimal preparation parameters were obtained as follows:sodium alginate∶water = 1∶90, calcium lactate∶water = 1∶45, and reaction cross-linking time was 4 min. The hydrogel beads prepared under this parameter had good elasticity, puncture strength and sensory flavor.

Keywords: sodium alginate; hydrogel beads; preparation; characterization

为了遏制白色污染的加剧,国家大力推动可持续发展政策。白色污染带来了较大的资源消耗、环境污染以及食品安全问题。其中尤为突出的是瓶装水外包装的不可循环利用带来的资源浪费。因此以生物为基础的可食膜应运而生。可食性膜主要以可食性生物大分子物质作为主要基质辅以可食性增塑剂,通过一定的工序处理后形成一层具有一定力学性能和选择透过性的结构致密的薄膜。周文俊和董必伟等利用海藻酸钠和氯化钠为原料制作出成本低、可生物降解的“ooho”可食用水球,并在伦敦西北部于2018年举行的马拉松赛上代替塑料杯作为容器,为选手提供水分补助。

海藻酸钠是一种由β-D-甘露糖醛酸(M嵌段)和α-L-古洛糖醛酸(G嵌段)通过1,4-糖苷键连接形成的天然阴离子线性多糖,呈白色或淡黄色粉末,无异味,常作为增稠剂、稳定剂运用在食品工业中。……

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