Effects of different pretreatments on the drying and quality characteristics of Strobilanthes sarcorrhiza (C. Ling) by hot-air drying

IF 5.6 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2025-03-06 DOI:10.1016/j.indcrop.2025.120759

Shuqing Zhu , Suikang Yuan , Cong Wang , Jiang Wu , Kaijun Wang , Xingquan Liu , Fenghua Wu , Peng Wang

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Abstract

In this study, the effects of ultrasound (USP), freeze-thaw (FTP), microwave (MWP), and blanching (BLP) pretreatments on the drying kinetic, water migration, microstructure, phytochemical compositions, and antioxidant activities of SSL were investigated. The SSL after BLP with large porous structures had higher effective moisture diffusivity and drying rate than the control with honeycomb structures, and the BLP-HAD group decreased its initial drying time and energy consumption of 51.23 % and 53.09 %, respectively. The SSL treated with BLP-HAD had improved rehydration rate of 2.23 g/g, hardness of 51.52 N, and shrinkage rate of 80 %. Additionally, the SSL after BLP treatment had higher contents of saponin (10.13 g/100 g), total phenolic (64.74 mg/100 g), and total flavonoid (3.95 g/100 g) than the HAD, thereby resulting in enhanced antioxidant activities of BLP-HAD group. BLP combined with hot-air drying is a promising pretreatment technique, as it improves both the drying process and the quality of the SSL.

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.