Advances in Green Extraction Technology of High Added-Value Compounds from Agri-Food Waste

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Food Engineering and Technology".

Deadline for manuscript submissions: 10 July 2024 | Viewed by 945

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Department of Agricultural, Food and Environomental Science, University of Perugia, Via San Costanzo, 06126 Perugia, Italy
Interests: food science and technology; food quality; food analysis; agri-food waste valorization; bioactive compounds; malting; brewing
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Special Issue Information

Dear Colleagues,

The ongoing globalization of markets is worsening the issue of food loss and waste throughout the entire food supply chain. According to the United Nations Food and Agriculture Organization (FAO), approximately one-third of all food produced globally is wasted every year throughout the whole value chain—from farmers to consumers. To fully capitalize on the potential of agri-food waste, it is essential to use efficient green extraction technology to isolate high-added-value compounds such as bioactive compounds, antioxidants, proteins, lignocellulosic fraction, etc., for successful conversion into a range of value-added products. The development of reliable and scalable green extraction processes designed using unconventional and safe techniques and green and recoverable solvents in order to minimize environmental impacts and ensure compliance with current regulation, need to be promoted.

Dr. Ombretta Marconi
Dr. Assunta Marrocchi
Guest Editors

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Keywords

  • agri-food waste and by-products
  • biomass waste
  • green extraction technologies
  • green solvents
  • bioactive compounds
  • antioxidants
  • proteins
  • lignocellulose
  • sustainability assessment

Published Papers (1 paper)

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Research

11 pages, 2746 KiB  
Communication
Deep Eutectic Solvents for Efficient and Selective Extraction of α-Glucosidase Inhibitors from Waste Seeds of Refined Betel Nuts
by Jin Liu, Li Ma, Senwen Deng, Xinzhi Chen, Qi Li, Aiqing Xu, Ting Tong, Shuhua Tan, Mingkang Wang, Jiangtao Cai and Haihua Wang
Foods 2024, 13(7), 1070; https://doi.org/10.3390/foods13071070 - 30 Mar 2024
Viewed by 785
Abstract
During the production process of refined betel nuts in China, a large amount of processing by-product, betel nut waste seeds, is generated. Betel nut waste seeds are rich in bioactive elements, but they have not been effectively utilized yet. In this study, an [...] Read more.
During the production process of refined betel nuts in China, a large amount of processing by-product, betel nut waste seeds, is generated. Betel nut waste seeds are rich in bioactive elements, but they have not been effectively utilized yet. In this study, an ultrasonic-assisted deep eutectic solvent method (DES) was used to selectively extract α-glucosidase inhibitors from waste seeds. Compared with traditional extraction solvents such as water and ethanol, the extraction efficiency of specific DESs is higher, and the content of alkaloids in the extracts is lower. However, it should be noted that some pure DESs exhibit inhibitory activity towards α-glucosidase. DESs, based on choline chloride/urea, were selected due to the high extraction efficiency of α-glucosidase inhibitors and their low alkaloid content as well as low inhibitory activity. The optimal extraction conditions were determined using single-factor experiments as follows: 30% (v/v) water content, a choline chloride/urea ratio of 5:3, a solid–liquid ratio of 1:10, extraction temperature of 40 °C, and a duration of 30 min. Through recovery experiments, it was found that the DES can be reused four times under these conditions, maintaining an inhibition rate comparable to alcohol extraction methods. The IC50 value of the extract was measured at 0.0066 mg/mL, superior to acarbose. In summary, this research has successfully developed an efficient and selective method for extracting α-glucosidase inhibitors from betel nut waste seeds, thereby presenting a promising avenue for future applications. Full article
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