Nutritional Characteristics of Calystegia japonica

Abstract

In the present study, the proximate composition, sugar, minerals, total phenolic and flavonoid compounds, and amino acids in Calystegia japonica (C. japonica) were measured to determine if it can be used as a nutritional and functional material for the development of valuable foods. The mean crude protein, fat, and ash contents of the leaves were 5.75, 2.46, and 7.77%, respectively. The soluble-protein contents of the leaves and roots were 146.78 and 33.67 mg%, respectively. The reducing-sugar and free-sugar contents of the leaves were 682.70 and 166.00 mg%, respectively, and those of the roots were 2,934.89 and 37.70 mg%. The mineral content of the leaves was 3,122.13 mg%, and that of the roots was 1,540.85 mg%. The three elements Ca, K, and Mg were very rich in all their parts, with minerals accounting for 96-99% of their total mineral contents. The total phenolic compound of the leaves was 3,028.89 mg%, and the total flavonoid compound was 382.67 mg%. The phenolic and flavonoid compounds in the leaves were more than 7.6 times those in the roots. The free-amino acid levels in the leaves and roots were 2,467.15 and 1,334.81 mg%, respectively. The results of the comparison of the leaves and roots of C. japonica showed that the leaves had a rich proximate composition consisting of minerals, total phenolic and flavonoid compounds, and amino acid. This suggests that C. japonica leaves are potentially useful sources of functional and favorite foods and nutraceuticals.

Dichloromethane fractions of Calystegia soldanella induce S‑phase arrest and apoptosis in HT‑29 human colorectal cancer cells

“…et Schult (convolvulaceae) is a perennial herb that grows on coastal sand dunes worldwide (14). This plant has been extensively used in traditional medicine for general consumption and as a type of herbal treatment, since it is considered to confer bioactive effects against rheumatic arthritis, sore throat, dropsy, scurvy, fever and diarrhea (15)(16)(17). in particular, fractions of C. soldanella have been reported to exhibit anti-inflammatory (18)(19)(20), antifungal (21), antiviral (22)(23)(24)(25), anticancer (26,27) and analgesic effects (28).…”

Crude extract and solvent fractions of Calystegia soldanella induce G1 and S phase arrest of the cell cycle in HepG2 cells

“…Some studies have shown that this plant species exhibits various biological activities. Another species, C. japonica , which has been used as a traditional medicine to treat urination problems, fever, or diarrhea in Chinese and oriental herb medicine (33,34). Moreover, C. soldanella has been shown to exhibit a number of biological activities, including anti-inflammatory, antiviral, antifungal, anticancer, and analgesic properties, and more specifically, inhibition of protein tyrosine phosphate 1B (PTP1B) (35–42).…”