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Circular economy of Castanea henryi: high-value utilization and processing technologies advances
Zhi-Hui Deng1,2, Bin Yuan3, Yuan-Yuan Lu3
1Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China.
Critical Reviews in Food Science and Nutrition
|September 20, 2025
Summary
Castanea henryi, an underexplored chestnut, offers high starch and bioactive compounds for health benefits and reduced land pressure. This review explores its potential for functional products and waste valorization.
Area of Science:
- Food Science
- Nutritional Science
- Agricultural Science
Background:
- Castanea henryi (Ch) is an underutilized nut with high starch and bioactive compound content.
- Existing research lacks a consolidated overview of Ch's health benefits and by-product applications.
- Ch offers potential health benefits and can alleviate arable land pressure.
Purpose of the Study:
- To provide a comprehensive overview of the health benefits and potential applications of Castanea henryi kernels and by-products.
- To propose strategies for the high-value utilization of Ch kernels and waste by-products.
- To unlock the full industrial and health potential of Castanea henryi.
Main Methods:
- Literature review integrating advanced knowledge on product development and processing.
- Analysis of Ch kernel composition, including starch and polyphenol content.
- Evaluation of bioactive properties and potential health benefits (lipid-lowering, anti-diabetic, anti-inflammatory, anti-cancer).
Main Results:
- Ch kernels are rich in resistant starch (65.4%) and polyphenols (1.03-1.07 mg/g).
- Ch exhibits significant lipid-lowering, anti-diabetic, anti-inflammatory, and anti-cancer properties.
- Ch by-products (shells, leaves) are rich in nutrients and can be used for functional products, substrates, and feedstuff.
Conclusions:
- Castanea henryi presents significant potential for developing functional food products due to its nutritional profile and bioactive compounds.
- Innovative strategies are needed to overcome processing challenges like kernel damage and browning.
- Valorization of Ch by-products offers sustainable solutions for waste management and resource utilization.
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