Comparison of nutritional composition, physicochemical and antioxidant properties of muscle, liver, and shell from Grass Turtle (Chinemys reevesii)

Abstract

Nutritional composition, functional and antioxidant properties of different parts from grass turtle were investigated. Muscle contained high protein, essential amino acids, and vitamin B6, which were 74.97%, 28363.84, and 14.47 mg/100 g, respectively. Unsaturated fatty acids, vitamin K were significantly higher in the liver which reached 7489.45 and 1591.67 mg/100 g, respectively. Hardshell high content of minerals and vitamin B3 (48998.06 and 17.52 mg/100 g), correspondingly. The molecular weight was obtained in the range of 0.27-87.38% (Mw˂1000 Da). Solubility, emulsifying activity, and emulsion stability index at different pH ranged from 3.89 to 45.89%, 47.53 to 90.22 m 2 /g, and 65.45 to 89.93%, respectively. Water and oil holding capacities were high in muscle (7.97 and 2.19 mL/g). The highest antioxidant activity was observed in the muscle (88.58% ABTS) and liver (66.71% DPPH and 0.49 FRAP). Muscle, liver, and hard shell properties will provide producers and consumers with useful new information about the nutritional value and health benefits.

Antiaging function of Chinese pond turtle (Chinemys reevesii) peptide through activation of the Nrf2/Keap1 signaling pathway and its structure-activity relationship

“…According to the traditional remedy claims by oriental medicine in China, the Chinese pond turtle may have a positive impact on the promotion of longevity. The previous study reported that the Chinese pond turtle hydrolysates contain high content of antioxidant components and antidiabetic activities (21). In addition, peptide extracted from soft-shelled turtle not only possessed superior antioxidant activity in vitro but also could 10.3389/fnut.2022.961922 regulate the Nrf2-mediated signaling pathway in mice (19,22).…”

Transformation of Mitochondrial Architecture and Dynamics in the Chinese Soft-Shelled Turtle (Pelodiscus sinensis) During Hibernation

“…Based on the annual temperature variations in the species distribution area, the hibernation period of Pelodiscus sinensis usually starts in November and ends in April of the following year (Zhang et al, 2015). Given its important nutritional value and medicinal value in traditional Chinese medicine (Islam et al, 2021), the artificial culture of Pelodiscus sinensis is flourishing in new century. Nonetheless, the entrenched mortality of Chinese soft-shelled turtle during hibernation remains unsolved.…”