Atmospheric cold plasma pretreatment for enhanced phlorotannin extraction and bioactivity from Sargassum tenerrimum

IF 6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

LWT - Food Science and Technology Pub Date : 2025-02-18 DOI:10.1016/j.lwt.2025.117561

Zhian Sheikhi , Parisa Kazemzadeh , Leila Mahmoudzadeh , Salim Sharifian , Sirous Khorram , Shadieh Mohammadi , Maryam Mahmoudzadeh

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Abstract

The effects of dielectric barrier discharge atmospheric cold plasma (ACP) pretreatment on enhancing the extraction of phlorotannins (PHT) from water-suspended Sargassum tenerrimum powder were investigated. The optimization of process conditions was conducted using the one-factor-at-a-time method, focusing on variables such as water volume (20, 30, and 40 mL), exposure time (5, 10, and 15 min), and input power (50, 70, and 80 W). Results indicated that suspending seaweed powder in 20 mL of distilled water for 10 min at 80 W increased the PHT content from 3.42 ± 0.23 to 6.65 ± 0.29 mg phloroglucinol equivalent per gram of extract. Scanning electron microscopy (SEM) revealed progressive damage to the seaweed cell structure. HPLC analysis demonstrated alterations in the PHT component profiles following ACP pretreatment. Furthermore, biological activities, including antibacterial and anti-inflammatory properties, improved after ACP pretreatment without exhibiting cytotoxic effects. These results suggest that the ACP pretreatment developed can effectively enhance the extraction of bioactive compounds, increasing both their yield and biological efficacy.

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来源期刊

LWT - Food Science and Technology 工程技术-食品科技

CiteScore

11.80

自引率

6.70%

发文量

1724

审稿时长

65 days

期刊介绍： LWT - Food Science and Technology is an international journal that publishes innovative papers in the fields of food chemistry, biochemistry, microbiology, technology and nutrition. The work described should be innovative either in the approach or in the methods used. The significance of the results either for the science community or for the food industry must also be specified. Contributions written in English are welcomed in the form of review articles, short reviews, research papers, and research notes. Papers featuring animal trials and cell cultures are outside the scope of the journal and will not be considered for publication.