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Effect of Plasticizers on Mechanical Properties of Edible Film From Janeng Starch – Chitosan

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The Different Magnetic Results of Anemi and PPM Measurements on the Buried Remains of a 13th Century Fortress

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Kajian Statistik Seismisitas Kawasan Sumatera

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Effect of Plasticizers on Mechanical Properties of Edible Film From Janeng Starch – Chitosan

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The Different Magnetic Results of Anemi and PPM Measurements on the Buried Remains of a 13th Century Fortress

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Kajian Statistik Seismisitas Kawasan Sumatera

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Isolation of Antioxidant Compounds of Methanol Extract of Nutmeg Leaves (Myristica Fragrans Houtt)

.The antioxidant activity from methanol extract of nutmeg leaves (Myristica fragrans Houtt) was performed using 2,2-diphenyl-1-picrylhydrazil (DPPH). Antioxidant assay using DPPH of the methanol extract at a concentration of 25 ppm, 50 ppm and 100 ppm, showed high antioxidant activity with IC50 = 36.31 ppm and Vitamin C showed antioxidant activity with IC50 = 3.657 ppm. The methanol extract of nutmeg leaves were partitioned with chloroform to obtain chloroform extract of the leaves with IC50 = 28.30 ppm. isolation of the active compounds from the chloroform extract of the nutmeg leaf using column chromatography yielded 6 mix fractions MFMD 1, MFMD 2, MFMD 3, MFMD 4, MFMD 5 and MFMD 6. The test results of antioxidant activity in very strong category is fractions MFMD 4, MFMD 3, MFMD 2, MFMD 6 and MFMD 5 with IC50 of each are 26.590 ppm, 27.239 ppm, 29.639 ppm, 39.766 ppm and 55.436 ppm, while antioxidant activity in a weak catagory is fraction MFMD 1 with IC50 is 126.270 ppm. This shows that the fraction of the leaf has a better inhibitory activity, because some of the active compound contained in the fraction can synergize in inhibiting free radicals, so that the IC50 value of the fraction is stronger than the extract.
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Uji Efektivitas Sediaan Gel Fraksi Etil Asetat Daun Jambu Biji (Psidium Guajava Linn) Terhadap Penyembuhan Luka Terbuka Pada Mencit (Mus Musculus)

Guava leaf has various benefits, one of them is accelerating the healing process of a wound. This study aims to formulate the ethyl acetate fraction into a gel form and test the effectiveness of gel formulation toward open wounds in 16 male mices (Mus musculus) which made excision 1 cm circular full thickness wound on the back of mice parallel with Os. vetebra. The ethyl acetate fraction of guava leaf has been made into concentrations of 5% and 7% with base gel used as negative control and Bioplacenton as positive control. The evaluation towards ethyl acetate fraction gels showed the gels have green-yellow color, guava odor, homogenous, relevant pH to the skin 6,31-6,51, and spread over 2,8-3 cm (stiff gel). The gels were applied onto the wounds twice a day for about 21 days. The observation was conducted every day towards the scab formation day, scab chipped day, and wound healing day. The data were analyzed statistically using one way ANOVA then continued with Tukey test. The average day for scab formation, scab chipped, and wound healing process, successively are in the negative control i.e. 6,50 ; 13,50 ; 20,25, then positive control of 3,75 ; 11,00 ; 17,25, for gel with 5% concentration, 3,75 ; 9,75 ; 16,50, and gel with 7% concentration, 4,50 ; 12,00 ; 18,25. The statistical result showed that the ethyl acetats fraction could accelerate the scab formation (p<0,05) and the open-wound healing (p<0,05) in mice than the control negative (p<0,05), but not in the scab exfoliation (p>0,05). Gel concentration 5% accelerated faster in forming the scab, flaking off the scab, and healing the wound compared with the gel concentration of 7%.
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Sistem Kendali Proporsional, Integral, Dan Derivatif (Pid) Pada Persamaan Panas

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Antioxidant Activity of N-hexane Extract of Nutmeg Plants From South Aceh Province

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Sistem Kendali Proporsional, Integral, Dan Derivatif (Pid) Pada Persamaan Panas

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Antioxidant Activity of N-hexane Extract of Nutmeg Plants From South Aceh Province

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Antimicrobial Activity of Methanol Extract From Stem Bark of Cinnamomum Sintoc

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Activity Test of Abrus Precatorius L. Leaf Extract Against Clinical Streptococcus Pneumonia Growth*

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Inhibition Test of Methanol Extract From Soursop Leaf (Annona Muricata Linn.) Against Streptococcus Mutans Bacteria*

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Bioassay on N-Hexane Extract of Leaves Cassia Alata Against Candida Albicans

The study of biological activity from n-hexane extract of leaves' Cassia alata had been done against Candida albicans as bioindicator. Dried leaves of C. alata (850 g) were macerated into n-hexane to obtain a dark green crude extract (31.79 g). The n-hexane crude extract was then subjected to vacuum liquid chromatography (VLC) and eluted with n-hexane and ethyl acetate to give 4 sub-fractions, namely fraction A (7.7251 g), fraction B (1.9419 g), fraction C (1.3565 g) and fraction D (1.4737 g) respectively. Based on phytochemical analysis, both nhexane crude extract and chromatographic sub-fractions contained steroids as their secondary metabolite constituent. The antifungal activity was tested against C. albicans using the agar-disc diffusion method with three different concentrations (10, 30 and 50%). Fraction D showed medium antifungal activity at 10.6, 11.3 and 12.6 of diameter-inhibition zones (mm) respectively.
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