Optimization of Plasma Activated Water Extraction of Pleurotus ostreatus Polysaccharides on Its Physiochemical and Biological Activity Using Response Surface Methodology

Author:

Punthi Fuangfah1ORCID,Yudhistira Bara12ORCID,Gavahian Mohsen3ORCID,Chang Chao-Kai1ORCID,Husnayain Naila4ORCID,Hou Chih-Yao5ORCID,Yu Cheng-Chia67,Hsieh Chang-Wei18ORCID

Affiliation:

1. Department of Food Science and Biotechnology, National Chung Hsing University, Taichung City 40227, Taiwan

2. Department of Food Science and Technology, Sebelas Maret University, Surakarta City 57126, Indonesia

3. Department of Food Science, National Pingtung University of Science and Technology, Pingtung City 91201, Taiwan

4. International Master Program of Agriculture, National Chung Hsing University, Taichung City 40227, Taiwan

5. Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan

6. Institute of Oral Sciences, Chung Shan Medical University, Taichung City 40201, Taiwan

7. Department of Dentistry, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan

8. Department of Medical Research, China Medical University Hospital, Taichung City 40402, Taiwan

Abstract

This study focused on optimizing the extraction of P. ostreatus polysaccharides (POPs) using plasma-activated water (PAW). A single factor and response surface methodology were employed to optimize and evaluate the polysaccharide yield, physiochemical characteristics, and biological activities of POPs. The observed findings were compared to those obtained by the conventional hot water extraction method (100 °C, 3 h), as the control treatment. The optimal extraction conditions were obtained at 700 W PAW power, 58 s treatment time, 1:19 sample-to-water ratio, and 15 L/min gas flow rate. In these conditions, the PAW-treated samples experienced changes in surface morphology due to plasma etching, leading to a 288% increase in the polysaccharide yield (11.67%) compared to the control sample (3.01%). Furthermore, the PAW-treated sample exhibited superior performance in terms of biological activities, namely phenolic compounds (53.79 mg GAE/100 g), DPPH scavenging activity (72.77%), and OH scavenging activity (65.03%), which were 29%, 18%, and 38% higher than those of control sample, respectively. The results highlighted the importance of process optimization and provided new evidence for PAW as an alternative approach to enhance the extraction efficiency of POPs, a novel source of natural antioxidants which enables diverse applications in the food industry.

Funder

National Science and Technology Council

Advanced Plant and Food Crop Biotechnology Center

the Ministry of Education

Publisher

MDPI AG

Subject

Plant Science,Health Professions (miscellaneous),Health (social science),Microbiology,Food Science

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