Judul: Karakteristik Imago Jantan Ulat Sutera Liar Attacus atlas (Lepidoptera : Saturniidae)
Abstrak: This study aims to describe various morphometric parameters of male A. atlas moth, to found a correlation between the morphometric parameters and body weight on male moths, and to describe the reproductive system of male A. atlas moth. Male can distinguish from the female by comparing the antennae. The antennae of male is wider. There is a very strong correlation between the total body length and the body weight in linear equation Y = 0.875 X-1, 639 when Y is the weight in grams and X is the total body length in cm. Reproductive system of male A. atlas moth generally similer to B. mori reproductive system. Male A. atlas moth has reproductive system consists of a pair of testes, a pair of deferent duct with ampula ductus deferent, one spermatophore gland, one alba gland, one prostatica gland and one penis.
Keyword: reproductive system, Attacus atlas, morphometric

Judul: Performa reproduksi imago jantan ulat sutera liar Attacus atlas L. (Lepidoptera: Saturniidae)
Abstrak: Attacus atlas L. (Lepidoptera: Saturniidae) is one of Indonesian native insect that has a great potential economy. Fulfillment the demand of material for silk thread still rely that exist in nature, therefore, needs to be done with the use of intensive breeding male imago as effective as possible in mating. The aim of this research was to study the reproduction performance of male imagoes of wild silkworm A. atlas. This research was conducted by allow a male imago mate with three different females. The time of each mating was 6 hours. The parameters observed were the first, second and third ejaculate volume, the number of eggs per imago, egg hatching time and hatchability of eggs. The results showed that the frequency of mating significantly affect the percentage of egg hatchability. The optimum value was achieved at first mating was 53.58 ± 18.26%. The percentage of egg hatchability declined with increasing frequency of mating. The number of eggs per imago and egg hatching time was not influenced by the frequency of mating with the average number of eggs per imago 225.86 ± 34.23 eggs and the average time of hatching eggs was 11.20 ± 3.23 days
Keyword: Bogor Agricultural University (IPB), reproduction performance, mating frequency, imago, Attacus atlas

Judul: In Vitro Release of Ibuprofen from Microcapsules Coated Polyblend of Poly(lactic acid) and Poly(ε-caprolactone)
Abstrak: Ibuprofen is an anti-inflammatory drug that has a short biological half-life and imposes adverse gastrointestinal reaction. Microencapsulation could be used to minimize its disadvantages. In this experiment, microencapsulation of ibuprofen was done by emulsification method. Coating material which was used were polyblend of poly(lactic acid) and poly(ε-caprolactone) which are biodegradable and biocompatible. Polyvinylalcohol was used as an emulsifier at concentrations of 1.5%. The microencapsulation was carried out with various quantities of ibuprofen. The increase in quantities of ibuprofen would improve encapsulation efficiency. Encapsulation of ibuprofen showed an efficiency of more than 71% with the highest score of 84.13% in microcapsule with ratio of polyblend-ibuprofen 5:1.5. The dissolution test results in basic medium showed that the encapsulation efficiencies affected ibuprofen release from the microcapsule. Microcapsules with the higest encapsulation efficiency released ibuprofen ranged from 26.71 to 28.78% for 6 hours. Kinetic of ibuprofen release followed first order kinetic model. The microcapsules particle sizes ranged from 38 to 250 μm.
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