Optimisation of the extraction process of pectin polymer from red dragon skin (Hylocereus polyrhizus)

IF 0.5 Q4 EDUCATION, SCIENTIFIC DISCIPLINES

Pharmacy Education Pub Date : 2024-05-01 DOI:10.46542/pe.2024.243.116122

Muhammad Fariez Kurniawan, D. Hariyadi, Dwi Setyawan

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引用次数: 0

Abstract

Background: The variation of pectin extracted from red dragon skin (Hylocereus polyrhizus) depends on the type of acid, temperature, and length of extraction time. Objective: This research was conducted to determine the characteristics of pectin produced from red dragon skin based on using citric, oxalic, and acetic acids at pH 4, extraction temperature of 60°C and 75°C, and duration of 120 minutes. Method: A total of six conditions for pectin extraction were performed and the obtained product was dried using the freeze-dryer. Furthermore, the optimisation included yield, moisture content (MC), equivalent weight (EW), methoxyl content (MeO), galacturonic acid content (GA), degree of esterification (DE), sugar and organic acid levels (SO), and Fourier Transform Infrared Spectroscopy (FT-IR) was performed. Result: The EW value of red dragon skin and commercial apple pectin were comparable but the MeO value was slightly different from those extracted with 75°C oxalic acid. Compared to commercial apple and orange skin, the GA value of red dragon pectin extracted with 75°C oxalic acid was not different. Conclusion: FT-IR spectra contained groups -OH, -CH, and C=O and were confirmed to have a GA structure. The best product was obtained by conducting extraction under the condition of 75°C for 120 minutes using oxalic acid.

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优化从红龙皮（Hylocereus polyrhizus）中提取果胶聚合物的工艺

背景：从红龙皮（Hylocereus polyrhizus）中提取的果胶的变化取决于酸的类型、温度和提取时间的长短：本研究旨在确定在 pH 值为 4、提取温度为 60°C 和 75°C、提取时间为 120 分钟的条件下，使用柠檬酸、草酸和乙酸从红龙皮中提取果胶的特性：方法：共采用了六种果胶提取条件，并使用冷冻干燥机对提取物进行干燥。此外，还对产量、水分含量（MC）、等重（EW）、甲氧基含量（MeO）、半乳糖醛酸含量（GA）、酯化度（DE）、糖和有机酸含量（SO）以及傅立叶变换红外光谱（FT-IR）进行了优化：结果：红龙皮的 EW 值与商品苹果果胶相当，但 MeO 值与用 75°C 草酸提取的果胶略有不同。与商品苹果皮和橙皮相比，用 75°C 草酸提取的红龙果胶的 GA 值没有差异：结论：傅立叶变换红外光谱中含有 -OH、-CH 和 C=O 基团，证实其具有 GA 结构。使用草酸在 75°C 条件下萃取 120 分钟可获得最佳产品。

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

Pharmacy Education EDUCATION, SCIENTIFIC DISCIPLINES-

CiteScore

0.80

自引率

20.00%

发文量

174

期刊介绍： Pharmacy Education journal provides a research, development and evaluation forum for communication between academic teachers, researchers and practitioners in professional and pharmacy education, with an emphasis on new and established teaching and learning methods, new curriculum and syllabus directions, educational outcomes, guidance on structuring courses and assessing achievement, and workforce development. It is a peer-reviewed online open access platform for the dissemination of new ideas in professional pharmacy education and workforce development. Pharmacy Education supports Open Access (OA): free, unrestricted online access to research outputs. Readers are able to access the Journal and individual published articles for free - there are no subscription fees or ''pay per view'' charges. Authors wishing to publish their work in Pharmacy Education do so without incurring any financial costs.