The effect of different pretreatment namely natural sweating (NS), steam treatment (S), and stress sweating combined with steam treatment (SS) on the quality attributes (water-soluble polysaccharide, total triterpene content, alcohol-soluble extractive values, and broken rate) and drying characteristics of Poria cocos Wolf (PCW) cubes were investigated. The results showed that NS and SS pretreatment resulted in a noticeable weight loss, while S pretreatment resulted in a significant weight gain by PWC cubes. Such treatments as NS, S, and SS did not significantly affect the drying time of PCW cubes. SS pretreatment greatly improved the water-soluble polysaccharide content and alcohol-soluble extractive values of dried products by 1.54 and 1.68 times, respectively. NS pretreatment for four days resulted in the highest content of total triterpenes, that is, 6.46 mg/g d.b. of dried PCW cubes, while S pretreatment significantly reduced the broken index. A comprehensive evaluation method was used to quantify the feasibility of NS, S, and SS pretreatments in terms of drying time and quality attributes. Samples subjected to SS pretreatment were characterized by the highest comprehensive score. The results of this study showed that the selection of the appropriate treatment may help to improve the material quality and drying characteristics.

Novelty impact statement

SS pretreatment greatly improved the water-soluble polysaccharide content.
S obviously reduced the broken rate of dried products.
SS pretreatment comprehensively enhanced the quality attributes of dried products.

CONFLICT OF INTEREST

The authors have declared no conflict of interest for this article.

Open Research

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

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Enhancement of quality attributes of dried Poria cocos Wolf cubes by stress sweating combined with steam pretreatment

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Enhancement of quality attributes of dried Poria cocos Wolf cubes by stress sweating combined with steam pretreatment

Abstract

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CONFLICT OF INTEREST

Open Research

DATA AVAILABILITY STATEMENT

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