Bioresource Utilization of Djulis ( Chenopodium formosanum ) Biomass as Natural Antioxidants

Po-Hsien Li, Yung-Jia Chan, Wen-Chien Lu, Da-Wei Huang, Ting-Chieh Chang, Wen-Hong Chang, Xiao-Bao Nie, Chang-Xing Jiang and Xiao-Lei Zhang
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Po-Hsien Li: Department of Medicinal Botanical and Health Applications, Da-Yeh University, Changhua 51591, Taiwan
Yung-Jia Chan: College of Biotechnology and Bioresources, Da-Yeh University, Changhua 51591, Taiwan
Wen-Chien Lu: Department of Food and Beverage Management, Chung-Jen Junior College of Nursing, Health Sciences and Management, Chia-Yi City 60077, Taiwan
Da-Wei Huang: Department of Biotechnology and Food Technology, Southern Taiwan University of Science and Technology, Tainan City 710, Taiwan
Ting-Chieh Chang: Department of Medicinal Botanical and Health Applications, Da-Yeh University, Changhua 51591, Taiwan
Wen-Hong Chang: Department of Food Science, China University of Science and Technology, Taipei City 115, Taiwan
Xiao-Bao Nie: College of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China
Chang-Xing Jiang: College of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China
Xiao-Lei Zhang: Department of Basic Medical Sciences, Jiangsu College of Nursing, Huaian 223001, China

Sustainability, 2020, vol. 12, issue 15, 1-16

Abstract: Djulis ( Chenopodium formosanum ) is a yearly, fast-growing, under-utilized pseudo-cereal with a high proportion of biomass content. We used the hulls, which are usually removed from djulis as crop residue, to evaluate the free-radical scavenging and antioxidant capacity of djulis. We studied the antioxidant capacity of ethanol- and water-extracted hulls and roots by using various in vitro methods. Ascorbic acid was the reference sample. The extract samples were used at 200, 400, 600, 800, and 1000 µg/mL. Total sugar content, total phenolic content, and total flavonoid content were assessed. Antioxidant activity was assessed by using the Trolox equivalent antioxidant capacity, ferric reducing antioxidant power, cupric ion reducing antioxidant capacity, 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity, and N, N-dimethyl-ρ-phenylenediamine. Ethanol- and water-extracted red djulis hulls showed high amounts of total sugar, total phenolic content, total flavonoid content, and antioxidant capacity. Moreover, ethanol- and water-extracted red djulis roots showed moderate antioxidant capacity. However, ethanol- and water-extracted yellow djulis hulls showed limited antioxidant activities. Utilization of the biomass of djulis hulls and roots as natural antioxidant resources may be environmentally friendly and foreseeable.

Keywords: djulis ( Chenopodium formosanum ); biomass; antioxidant activity; DPPH; bioresource utilization (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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