This research aims to study the ant repellent effects of the crude ethanolic extracts from 7 herbs; Piper nigrum Linn. Alpinia galanga (L.) Willd Ocimum basilicum L. Cymbopogon citratus Stapf Citrus aurantiifolia (Christm.) Swingle Citrus hystrix DC and Stemona collinsae Craib. Whatman filter paper was dipped with each concentration of the crude ethanolic extracts (0.625 1.25 2.5 and 5 % w/v) and placing the bait on a treated filter paper. The experiments were conducted in the natural. The numbers of weaver ants were recorded at 0 - 30 minutes. From the results the crude ethanolic extracts at 5% w/v of A. galanga was the most effective for repellent the ant (repellent rate; %R = 94.72 ± 2.39) followed with C. citratus (%R = 89.45 ± 3.85) S. collinsae (%R = 82.92 ± 4.47) and P.nigrum (%R = 81.20 ± 5.92). The repellent rates of those crude ethanolic extracts were significantly difference from distilled water which use for the negative control (P < 0.05). The crude ethanolic extract of A. galanga at concentration 5% w/v was prepared as spray cream chalk and powder. At 30 minutes of the observation the ethanolic extracts of A. galanga spray was the best ant repellent effect (%R = 100). The result from questionnaires reveals that a spray preparation was the more satisfaction for the using ant repellent products.

The objectives of this research were to study chemical composition of crude extract from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn to determine the appropriate ratio of crude extract between Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn to develop a facial washing gel derived from crude extract from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn. The results showed that the crude extracts from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn had the total phenolic at 45.21 and 38.24 g/ml respectively. Whereas the total tannin from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn was 33.76 and 22.08 g/ml respectively. The steroids-terpene flavonoid and alkaloid were found in the crude extract of Naringi crenulata (Roxb.)Nicolson. The Steroids-terpene and flavonoid was found in crude extract of Coix lacryma-jobi Linn. IC50 of the tyrosinase inhibition was 0.28 mg/ml. The ratio of the crude extract could inhibition the enzyme tyrosinase was 1:1 with the IC500.18 mg/ml. The facial washing gel had red–brown colour with slightly smell from the extract with stable bubble. In addition the pH of the product was 6.7

The objective of this research were to focus the antioxidant activity and separated the chemical compound of crude extract from Feronia limonia Swingle branch. After that the optimum antioxidant of crude extract was used to prepare the antioxidant lotion. The result showed that crude extract had total phenolic and total tannin contents 41.99 and 52.35 g/ml ; respectively and also had antioxidant activity (IC50) 12.55 ?g/ml Whereas BHT and BHA had IC50 8.96 and 9.61 ?g/ml. The separation of crude extract can be separated into four groups (F1 F2 F3 F4) and the results showed that F2 has the strongest activity against the others with IC50 = 9.53 ?g/ml. Then F2 was analyzed with GC-MS and found that the structure were Hexadecanoic acid Ethyl ester Trimethylsilyl ester and Dioctyl ester. The lotion was odorless white color with no phase separation with pH 8.0