Enhanced extraction of soluble dietary fibre and seed oil from tomato pomace

IF 0.9 Q4 ENGINEERING, CHEMICAL

Indian Chemical Engineer Pub Date : 2021-09-23 DOI:10.1080/00194506.2021.1978874

Sheetal S. Kothawale, Pradip B. Dhamole

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Abstract

ABSTRACT This paper reports the extraction of soluble dietary fibre (SDF) and seed oil, from tomato peel and seed respectively. SDF was extracted using the alkaline extraction method, while the oil was extracted by a surfactant-assisted aqueous extraction method (SAAE). The alkaline extraction method reported for papaya peels is optimised in the present work for tomato peels. Maximum SDF yield of 17.2 g/ 100 g of defatted peel was achieved with the following extraction conditions: NaOH 1% (w/w); temperature 50°C; solid/liquid (L/S) 50:1 and time 60 min. Extracted SDF showed a low molar mass of 1.27×106 Da which is desirable as it helps in the formation of a gel. For SAAE, surfactants were screened from a range of surfactants (L61, L62, L64, Tween 80, and Triton X-100). Out of these, L62, at 1% (v/v) concentration showed 70% (w/w) extraction yield in a single-stage extraction with a L/S ratio of 25:1. SDF and oil yield obtained from these methods were higher than previously reported extraction techniques. Thus, both the alkaline extraction and SAAE were found to be better methods for SDF and seed oil extraction respectively. GRAPHICAL ABSTRACT

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番茄渣中可溶性膳食纤维和籽油的强化提取

摘要本文报道了从番茄皮和番茄籽中分别提取可溶性膳食纤维（SDF）和籽油的方法。SDF采用碱性提取法提取，油采用表面活性剂辅助水提取法（SAAE）提取。木瓜皮的碱性提取方法在本工作中对番茄皮进行了优化。在以下提取条件下获得17.2g/100g脱脂果皮的最大SDF产率：NaOH 1%（w/w）；温度50°C；固体/液体（L/S）50:1，时间60分钟。提取的SDF显示出1.27×106Da的低摩尔质量，这是理想的，因为它有助于形成凝胶。对于SAAE，从一系列表面活性剂（L61、L62、L64、Tween 80和Triton X-100）中筛选表面活性剂。其中，在L/S比为25:1的单级萃取中，浓度为1%（v/v）的L62显示出70%（w/w）的萃取产率。从这些方法获得的SDF和油产率高于先前报道的提取技术。因此，碱性提取和SAAE分别是提取SDF和籽油的较好方法。图形摘要

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来源期刊

Indian Chemical Engineer ENGINEERING, CHEMICAL-

CiteScore

3.00

自引率

6.70%

发文量