Physicochemical properties of heterogeneously acetylated glucomannan of A. oncophyllus and its performance for iron encapsulation

Q3 Agricultural and Biological Sciences

Brazilian Journal of Food Technology Pub Date : 2022-01-01 DOI:10.1590/1981-6723.03622

H. N. Ulya, H. R. Devara, D. H. Wardhani, Aulia Chusnullita, D. Purwati, N. Aryanti

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Abstract

Abstract Well-known as a food additive, glucomannan has excellent biocompatibility and biodegradability properties. However, glucomannan is easily gelled, which limited its use in high concentration. To reduce the gel formation ability of glucomannan, acetylation was conducted. This work aims to study the effect of acetylation on physicochemical properties of glucomannan. Acetylation was performed in heterogeneous system which glucomannan was immersed in ethanol (96%) with various concentrations of glucomannan (5-25%) and acetic acid (5-99%). This modified glucomannan was subsequently used as an encapsulation matrix for producing iron beads. The results showed that higher concentration of acetic acid in acetylation impacted on higher solubility and viscosity of glucomannan. The transmittance intensity of Infrared (IR) spectra and morphology of glucomannan were changed due to the acetylation and encapsulation process. The highest viscosity of the matrix (484.33 cP) led to the highest Encapsulation Yield (EY) (53.3%). Gompertz’s model fitted to describe the release profile of iron in all samples (R2>0.92) that showed the burst phenomena in the initial release. This work found that acetylated glucomannan had higher solubility and has a potency to protect the iron taste during oral consumption as it releases slower in neutral pH solution.

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油松非均质乙酰化葡甘露聚糖的理化性质及其铁包封性能

葡甘露聚糖是一种众所周知的食品添加剂，具有良好的生物相容性和生物降解性。然而，葡甘露聚糖很容易凝胶化，这限制了它在高浓度下的使用。为了降低葡甘露聚糖的成胶能力，对其进行了乙酰化处理。本文旨在研究乙酰化对葡甘露聚糖理化性质的影响。在不同浓度的乙醇(96%)和不同浓度的葡甘露聚糖(5-25%)和乙酸(5-99%)中进行乙酰化反应。该改性葡甘露聚糖随后被用作生产铁珠的包封基质。结果表明，乙酰化过程中乙酸浓度越高，葡甘露聚糖的溶解度和粘度越高。乙酰化和包封过程改变了葡甘露聚糖的红外光谱透射率和形貌。基质粘度最高(484.33 cP)，包封率最高(53.3%)。Gompertz模型适合于描述铁在所有样品中的释放曲线(R2>0.92)，在初始释放时表现出爆裂现象。这项工作发现乙酰化葡甘露聚糖具有更高的溶解度，并且在口服时具有保护铁味的效力，因为它在中性pH溶液中释放较慢。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Brazilian Journal of Food Technology Agricultural and Biological Sciences-Food Science

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

35 weeks

期刊介绍： The Brazilian Journal of Food Technology (BJFT) is an electronic rolling pass publication with free access, whose purpose is to publish unpublished articles based on original research results and technological information that significantly contribute to the dissemination of new knowledge related to production and evaluation of food in the areas of science, technology, food engineering and nutrition (non-clinical). Manuscripts of national or international scope are accepted, presenting new concepts or experimental approaches that are not only repositories of scientific data. The Journal publishes original articles, review articles, scientific notes, case reports, and short communication in Portuguese and English. The submission of a manuscript presupposes that the same paper is not under analysis for publication in any other divulging vehicle. Articles specifically contemplating analytical methodologies will be accepted as long as they are innovative or provide significant improvement to existing methods. It is at the discretion of the Editors, depending on the subject relevance, the acceptance of works with test results of industrialized products without the information necessary to manufacture them. Papers aimed essentially at commercial propaganda will not be accepted.

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