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Effect of pasteurization and storage on bioactive components of Aloe vera gel

Hamed Saberian (Department of Food Science and Technology, Tarbiat Modares University, Tehran, Iran)
Zohreh Hamidi‐Esfahani (Department of Food Science and Technology, Tarbiat Modares University, Tehran, Iran)
Soleiman Abbasi (Department of Food Science and Technology, Tarbiat Modares University, Tehran, Iran)

Nutrition & Food Science

ISSN: 0034-6659

Article publication date: 22 March 2013

942

Abstract

Purpose

Aloe vera gel has nutritional and therapeutic properties due to presence of bioactive components. The aim of this study is to investigate the effect of pasteurization and storage time at different temperatures on some bioactive components of Aloe vera gel juice.

Design/methodology/approach

Aloe vera gel juice (Aloe barbadensis Miller) was pasteurized at 90°C for 1 min and stored up to 30 days at 4 and 25°C. The effect of pasteurization and storage time on glucomannan, vitamin C, DPPH inhibition (percent) and color of the juice was evaluated.

Findings

The results showed that pasteurization reduced vitamin C content and antioxidant activity 16% and 57%, respectively. During storage at 4 and 25°C, vitamin C and glucomannan contents reduced from 84.47 to 54.96 and 46.82 mg vitamin C/100 g dm and from 2.11 to 1.77 and 1.71 g/L, respectively. DPPH inhibition (percent) and Browning index (BI) increased significantly at both storage temperatures, which was more intensive at 25 than 4°C.

Originality/value

This paper is believed to be the only one which investigates the effect of thermal pasteurization and storage time at different temperatures on some bioactive components of Aloe vera gel juice.

Keywords

Citation

Saberian, H., Hamidi‐Esfahani, Z. and Abbasi, S. (2013), "Effect of pasteurization and storage on bioactive components of Aloe vera gel", Nutrition & Food Science, Vol. 43 No. 2, pp. 175-183. https://doi.org/10.1108/00346651311313553

Publisher

:

Emerald Group Publishing Limited

Copyright © 2013, Emerald Group Publishing Limited

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