Actinidia macrospermaC. F. Liang (a Wild Kiwi): Preliminary Study of Its Antioxidant and Cytotoxic Activities

Abstract

The antioxidant potential of Actinidia macrosperma C. F. Liang (Actinidiaceae) was investigated in vitro for total phenolic content, along with total antioxidant activity (TAA), 1,1-diphenyl 2-picryl hydrazyl (DPPH), and lipid peroxidation (LP). The results indicated that different polarity extracts of A. macrosperma exhibit different biological activities, which depends mainly on the presence of phenolic compounds. The antioxidant activity was in the following decreasing order: MeOH extract > EtOAc extract > aqueous extract > CHCl3 extract > Hexane extract. Moreover, the cytotoxic activity of this plant by MTT dye assay using SMMC-7721 has been determined also. The hexane, EtOAc, and CHCl3 extracts showed cytotoxicity in a dose-dependent manner. Methanol and aqueous extracts, however, showed weak activities in this test. And a very significant cytotoxic activity, not significantly different from the positive control of quercetin, was observed in CHCl3 extract.

Effects of Kiwifruit Dietary Fibers on Pasting Properties and In Vitro Starch Digestibility of Wheat Starch

“…The total, insoluble, and soluble dietary fiber (TDF, IDF, and SDF, respectively) levels of kiwifruit are 25.8%, 7.1, and 18.7% on a dry weight (dw) basis, respectively [ 19 , 20 ]. As a result, kiwifruit is a candidate for enriching dietary fiber products, increasing the commercial value of the fruit [ 21 , 22 ]. However, most of the current studies on kiwifruit dietary fiber have focused on the inhibition of digestive enzyme activity, hypolipidemic effects, hypoglycemic effects, and alterations in gut microbiota in relation to the nutritional value of kiwifruit dietary fiber [ 23 , 24 ], and there is limited scientific evidence supporting the pasting, structural, rheological, and textural characteristics of starch with added kiwifruit dietary fiber.…”