Indonesian population growth increases the need for food is one of the potato plant (Solanum tuberosum L.). Increasing the level of consumption is not matched by an increase in production of potatoes. According to data from the Ministry of Agriculture last national potato production data in 2010 was 1,060,805 and in 2011 amounted to 955.48

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Abstract. Andriani D, Revianti S, Prananingrum W. 2020. Identification of compounds isolated from a methanolic extract of Acanthus ilicifolius leaves and evaluation of their antifungal and antioxidant activity. Biodiversitas 21: 2521-2525. Acanthus ilicifolius L. (Acanthaceae) is commonly found in mangroves along the east coast of Surabaya. It can be used as an indicator of environmental pollution and damage in mangrove ecosystems. Studies have reported that A. ilicifolius has antimicrobial, antifungal, antiviral, anti-inflammatory, analgesic, antioxidant, anticancer, antileishmanial, and hepatoprotective activity due to the chemical compounds in the plant. This study aimed to determine the phytochemical compounds in methanolic extracts of A. ilicifolius and their antifungal and antioxidant activity. The study involved laboratory experiments with a post-test only control group design. Antifungal activity against Candida albicans biofilm was determined using microtiter plates. Antioxidant activity was determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. Phytochemical screening used colorimetric methods. Methanolic extracts of A. ilicifolius at 16% and 20% concentration had the same inhibitory effect as nystatin against C. albicans (about 70% inhibition of biofilm). Chemical compounds identified in the extract included flavonoids, alkaloids, glycosides, polyphenols, tannins, and steroids. Methanolic extracts of A. ilicifolius have strong antioxidant and antifungal activity, and the plant’s phytochemical compounds are potential candidates for antifungal therapy.

Background: Immunosuppressed conditions due to long-term corticosteroid and tetracycline consumption are susceptible to fungal invasion, especially by Candida albicans (C. albicans), that requires treatment of oral candidiasis. Toll like receptor-2 (TLR-2) plays a role in candida recognition. Nystatin is regularly employed for oral candidiasis, but produces certain side-effects. Chloroform extract of Acanthus ilicifolius (A. ilicifolius) leaves represents both a potent inhibitor of C. albicans growth and an antioxidant. Purpose: This study aimed to compare the effect of A. ilicifolius leaf chloroform extract and nystatin treatment on TLR-2 expression in oral candidiasis immunosupressed models. Methods: This study constitutes a true experimental investigation incorporating a post test-only control group design. 20 healthy male Rattus novergicus (Wistar), aged 12 weeks and with an average weight of 250g, were immunosuppressed through oral administration of dexamethasoneand tetracycline for a period of 21 days before being induced with C. albicans (ATCC-10231) 6 x 108 for two weeks. The subjects were divided into five groups (n=4/group): healthy (H), no-treatment(P), nystatin treatment(N), A. Ilicifollius (8%) treatment (AI-1) and A. ilicifollius (16%) treatment (AI-2). The subjects were treated for 14 days, with their tongue being subsequently biopsied. TLR-2 expression was subjected to immunohistochemical examination, observed under a microscope (400x magnification) and statistically analyzed (one-way Anova, LSD-test, p<0.05). Results: TLR-2 expression of P (6.25 ± 2.5), N (11.25 ± 0.96), AI-1 (13.00 ± 1.15), AI-2 (12.75 ± 1.7) was higher than H (1.75 ± 0.5). Significant differences existed between N to P, N, AI-1, AI-2; P to N, AI-1 and AI-2 (p<0.05). No significant differences were present between N, AI-1 and AI-2 (p < 0.05). Conclusion: A. ilicifolius extract can increase expression of TLR-2 in oral Candidiasis-immunosuppressed models. A. ilicifolius extract produces the same effect in increasing TLR-2 expression when compared to nystatin.

Methanolic extract from the leaves of Acanthus ilicifolius L. (A. ilicifolius L.) is a potent inhibitor of Candida albicans (C. albicans) growth and anti-inflammatory. C. albicans causes oral candidiasis in immunosuppressive condition. Mitogen-activated protein kinase (MAPK) signalling via p38 appears to discriminate between yeast and hyphal cells of C. albicans. Activation of p38 MAPK by hyphae results in the upregulation of proinflammatory cytokines. The p38 MAPK activation is known to impair corticosteroid action. The research was conducted to investigate the effect of methanolic extract A. ilicifolius L. treatment of oral candidiasis with the immunosuppressive condition through enhancement of p38 MAPK expression in the epithelial cells. Immunosuppressed conditions were obtained when 16 healthy male Rattus norvergicus (Wistar) was given oral administration of dexamethasone and tetracycline for 14 days and induced with C. albicans (ATCC-10231) 1 McFarland. The subjects were divided into four groups (n = 4/group): immunosuppression (IS), immunosuppression with oral candidiasis without treatment (ISC), immunosuppression with oral candidiasis and nystatin treatment (ISC+N), and immunosuppression with oral candidiasis and A. ilicifolius L. treatment (ISC+AI), and were treated for 14 days. Later, the rats were euthanised, and their tongue were biopsied. The p38 MAPK expression was subjected to immunohistochemical examination, observed under a microscope (400× magnification) and statistically analysed (one-way ANOVA, LSD-test, p < 0.05). The p38 MAPK expression of ISC+AI (36.05 ± 1.54) was higher than IS (26 ± 2.32), ISC (26.4 ± 3.71), IS+N (34.2 ± 0.99). Significant differences existed between ISC+AI and ISC+N to IS and ISC (p < 0.05). No significant differences were present between IS and ISC; ISC+AI and ISC+N (p > 0.05). Therefore, this treatment could enhance p38 MAPK expression in oral candidiasis with the immunosuppressed condition.