Volume 41, Issue 5 e13180
Original Article

Effects of high temperature steam treatment on microbial and phytochemical contents, antioxidant activities, chemical stability, and shelf life of oral liquid prepared from the leaves of Zanthoxylum bungeanum Maxim

Yawei Zhang

Yawei Zhang

College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100 China

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Fengyuan He

Fengyuan He

College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100 China

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Dengwu Li

Dengwu Li

College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100 China

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Dongmei Wang

Corresponding Author

Dongmei Wang

College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100 China

Correspondence Dongmei Wang, College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China. Email: [email protected]Search for more papers by this author
First published: 12 February 2017
Citations: 6

The first two authors contributed equally to this paper.

Funding information: Forestry Scientific Research in the Public Interest of China, Grant/Award Number: 201304811 and 201304706

Abstract

The effects of high temperature steam (HTS) treatment on liquid prepared from the leaves of Zanthoxylum bungeanum Maxim (ZBOL) were studied with by comparing other three treatment methods. After HTS treatment, the microbial content met the standard requirements, the ratios of the phytochemical content were all higher than 84.5%, the antioxidant activities had decreased by <9.57%, no obvious changes were observed in the sensory characteristics, and the results were all better than other treatments. Furthermore, ZBOL showed excellent chemical stability in assays in terms of the use of high temperature (60 ± 2°C) and strong illumination (4,500 ± 500 lx), and prediction and verification tests determined the shelf life of ZBOL to be 12 months (25°C). In summary, HTS was demonstrated to be an efficient treatment method of ZBOL, and these results can be used for the utilization of Z. bungeanum leaves in an industrial setting.

Practical application

This work provides an efficient method for treatment of oral liquid prepared with flavonoids and antioxidants from the leaves of Zanthoxylum bungeanum Maxim (ZBOL). Herein, the quality information of ZBOL is provided, and a theoretical basis is established for the market promotion of ZBOL and the comprehensive utilization of the resources of Z. bungeanum leaves.

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