Effect of different parts of the Physalis pubescens L. (Pp) on the immunocompetence were investigated in Kunming mice inbred lines. After 35 consecutive days of feeding, the mice were sacrificed to evaluate the immunologic function through the relative weights of spleen and thymus, the delayed type hypersensitivity (DTH), carbon particle clearance test and serum agglutination test. The results are summarised as follows: the pulp of Pp had statistically significant effect on the mice's non-specific immunity, but not on the weight of the mice's thymus. The Pp's pulp, peel and seeds had significant effect on the mice's cellular immunity, respectively, they had regulating effect on the mice's T-lymphocytes. Any part of Pp didn't have statistically significant effect on the mice's humoral immunity.
Inonotus hispidus has various health-promoting activities, such as anticancer effects and immune-stimulating activity. The commercialization of valuable plant triterpenoids faces major challenges, including low abundance in natural hosts and costly downstream purification procedures. In this work, orthogonal design was used to compound methyl jasmonate (MeJA), salicylic acid (SA), oleic acid, and Cu2+, and the effects of combinations on the total triterpenes biosynthesized were studied. The optimal combination was screened out and its effect on the activity of PAL, CAT, and SOD was studied. The optimal concentration of oleic acid was 2% when MeJA was 100 mol/L, and the total triterpenoid content and mycelia production were 3.918 g and 85.17 mg/g, respectively. MeJA treatment induced oxidative stress, and at the same time increased the activity of related defense enzymes. Oleic acid is thought to regulate cell permeability by recombining cell membranes. It promotes the material exchange process between cells and the environment without affecting cell growth. When oleic acid was used in combination with MeJA, a synergistic effect on triterpene production was observed. In conclusion, our findings provide a strategy for triterpenoid enrichment of I. hispidus.
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