Ethyl acetate fraction of Som Java leaves (Talinum paniculatum (Jacq.) Gaertn) has been shown to boost innate immunity in the body (non-specific immunomodulatory activity). This study aims to determine the immunomodulatory activity of the specific response of the ethyl acetate fraction of Som Java leaves (Talinum paniculatum (Jacq.) Gaertn). Test specific immune response by using delayed type hypersensitivity test and total antibody titers test. Analysis of data obtained using SPSS version 16.0. Delayed type hypersensitivity test results showed that the ethyl acetate fraction Som Java leaves 50, 100 and 150 mg/kgbw proven to increase cellular immune response and activities comparable to the positive control. Total antibody titer test results showed that the fraction of ethyl acetate Som Java leaves three doses shown to increase the value of primary and secondary antibody titers. Based on the test results specific response can be concluded that the ethyl acetate fraction Som Java leaves have specific immunomodulatory activity.Keywords: Talinum paniculatum (Jacq.) Gaertn, immunomodulatory, delayed type hypersensitivity, total antibody titer test

The presented study aimed to characterize the content, biological activity and formulation of extracts prepared from dried Stevia rebaudiana Bert leaves. Stevia rebaudiana Bert is the leaves that have antioxidant activity. The leaves, stems and flowers of stevia contain a complex mixture of sweet diterpene glycosides, including isosteviol, stevioside, rebaudioside (A, B, C, D, E, and F), steviolbioside and dulcoside A. In addition to glycosides, the leaves of stevia also contain other phytoconstituents, such as flavonoids, phenolic acids, fatty acids, proteins, and vitamins. These compounds can prevent and retain free radicals substitution, which can cause aging and chronic diseases. The extract obtained was filtered and evaporated — determination of total phenolics and total flavonoid using spectrophotometric methods. The antioxidant potential of this extract was evaluated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay. In the DPPH radical-scavenging activities, the extract had the antioxidant activity (IC50 = 48.18 μg / ml). The results showed that these extracts of Stevia rebaudiana Bert could be considered as natural antioxidants. The evaluation of the formulated cream showed good results and can be good potential for cosmetic product development.

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Photoaging is a common problem that occurs in our community due to ongoing exposure to ultraviolet rays. The use of antioxidants is an effective approach to prevent symptoms related to photo-induced aging of the skin. The objective of this study was to purification alkaloid and to formulate antioxidant cream extract Perna viridis. Thus, the present study was to prepare and evaluate the antioxidant cream extracts of Perna viridis for their radical scavenging activity. Perna viridis is one of the economically important biotas. This biota is diverse in Indonesia waters and occurred in coastal, mangrove area and estuarine. Initially, the material was macerated gradually with ethanol. The extract obtained was filtered and evaporated. The extracts were fractionated and analyzed by Thin-layer Chromatography. The extracts were examined for DPPH (2, 2 - diphenyl - 1- picrylhydrazyl) radical scavenging activity with reference standard ascorbic acid through in vitro models. The ethanolic extract Perna viridis was found to act in scavenging DPPH radicals with ascorbic acid used as the reference standard, and an IC50 value was found to be 90.17 μg/mL. The results showed that these extracts of Perna viridis could be considered as natural antioxidants and may be useful for curing diseases arising from oxidative deterioration.

Extract of Stevia leaf of rebaudiana Bert has a content that is easily oxidized by the presence of light and heating so it is not stable during storage. A microencapsulation process is carried out which aims to protect the contents in the extract. This study aims to determine the effect of storage temperature on the physical stability of the microencapsulation of Stevia leaf of rebaudiana Bert with a combination of encapsulants inulin chitosan. A study was conducted to determine the effect of temperature on the microencapsulation stability of Stevia leaf of rebaudiana Bert over a period of 1 month. Tests carried out on the microencapsulation of Stevia leaf of rebaudiana Bert include the examination of the physical parameters of the microcapsules, namely the microencapsulation yield, moisture content, solubility, flow rate, non-encapsulated and encapsulated extracts content and determination of particle distribution and morphological form. The test results show that the storage temperature does not affect the microencapsulation stability of Stevia leaf of rebaudiana Bert, because the SEM test results did not change i.e. the particle size distribution of 1 -1000 µm. The average yield obtained from making microencapsulation of Stevia leaf extract of rebaudiana Bert was 98.20%. Storage temperatures of 5˚C, 25˚C and 40˚C affect the physical stability of the microencapsulation of Stevia leaf extract of rebaudiana Bert due to changes in the profile of physical characteristics during storage.