Cordia myxa L .leaf is a plant from Boraginaceae family which is traditionally used as medicine of several skin diseases . The purpose of thid research is to know the chemical compound antioxidant activity of ethanolic extract of Cordia myxa L. leaf. The used extraction method was maceration method using 70% as solvent. Identification of coumpound group used color reaction and precipitation method respectively. While antioxidant activity test used free radical scavenging method of DPPH (1,1-dyphenyl-2 pycril Hydrazil). From the extraction result, that was found that %redamen of ethanolic extract of Cordia myxa L .leaf 2.76%. While the determination of chemical compound showed that ethanolic extcract of Cordia myxa L .leaf containing steroid, flavonoid, saponin, and phenol. The result antioxidant activity assay showed that ethanolic extract of Cordia myxa L .leaf has intermediate free antiradical activity with IC50 value 54.92 µg/mL. But it is potensial is lower than Quarcetin which has IC50 value 0.52 µg/mL.

Teh hijau memiliki nama spesies Camellia sinensis (L.) Kuntze, family Theaceae dan Jati belanda (Guazuma ulmifolia Lam.) termasuk kedalam family sterculiaceae Tujuan Penelitian ini adalah melakukan standarisasi ekstrak air daun jati belanda dan ekstrak air the hijau. Ekstrak distandardisasi dengan beberapa dua parameter yaitu parameter spesifik dan parameter non spesifik. Kadar sari larut air pada jati belanda 12,88 % dan teh hijau 40,88, sedangkan kadar sari larut etanol pada jati belanda 4, 23 % dan pada teh hijau 4,23 %. Hasil pengujian kandungan kimia menunjukkan pada ekstrak jati belanda mengandung saponin dan flavonoid sedangkan pada teh hijau mengandung tannin dan flavonoid. Kadar air ekstrak daun jati belanda 0,95 % dan teh hijau 2,79%. Hasil kadar abu total jati belanda sebesar 37,61% dan teh hijau 36,84 %. Kadar abu tidak larut asam yaitu pada jati belanda sebesar 3,54% dan teh hijau 3,77%. Hasil dari penetapan susut pengeringan pada ekstrak jati belanda yaitu 0,46 % dan teh hijau 0,46 %. Ekstrak jati belanda maupun teh hijau berdasarkan pengujian standarisasi meliputi parameter spesifik dan no-spesifik memenuhi standarisasi mutu bahan baku.

Indonesia has many plants that have been used for treating many diseases such as diabetic. One of the Indonesian plants has been shown the antidiabetic activity such as mahoni. In this study, we have investigated the standardization of the purified extract of the mahoni seeds and its antioxidant activity. The standardization methods include organoleptic test, determination of drying loss, determination of, total ash level, determination of acid-insoluble ash level, determination of water-soluble essence level, determination of ethanol soluble essence level, phytochemical profile test: alkaloid test, flavonoid test, phenolic test, saponin test, terpenoid, and steroid test. The results show the purified extract mahoni seed qualify as a raw material for herbal medicine and also has potential as an antioxidant IC 50 33.86 ug/ml that compare with the standard.

Kecombrang (Etlingera elatior Jack.) is one of the plants growing in the area of Palopo, South Sulawesi. Kecombrang included in the Zingiberaceae family and rhizome of kecombrang widely used by the community as an antioxidant. This research aimed to determine the phenolic content on the methanol extract of the rhizome kecombrang. Methanol extract of rhizhome kecombrang obtained by maceration method with methanol P. Chemical component analysis used thin layer chromatography (TLC) is characterized by the appearance of spot. Determination of the phenolic content of the methanol extract of rhizomes kecombrang used the TLC-densitometry. The results showed that the phytochemical assay on methanol extract of kecombrang rhizomes positively countains 144.43 µg phenolic compounds.

Mahoni is a medical plant which have the potential as drug. The aims of this research were to analysis phytochemical content and to test the toxicity of ethanol extract of seed from Mahoni. The Phytochemicals that analyzed were total phenolic, total flavonoid and condensed tannin. Toxicity test was assessed using BSLT method. Extraction was done by maseration method using ethanol as the solvent. In BSLT method, the shrimp larvae were placed in a series of test solution of varied concentration. The value of LC50 were obtained based on calculation of shrimp larvae lethality percentage using probit analysis. LC50 values of ethanol extract were 0,95 ppm.