Judul: Prevalensi Infestasi Parasitoid pada Ulat Sutera Liar Attacus atlas (Lepidoptera: Saturniidae) di Perkebunan Teh Kabupaten Purwakarta
Abstrak: The purpose of this research was to study of prevalence infestation of parasitoids to Attacus atlas (Lepidoptera: Saturniidae), characteristic of the pupae parasitoids discharge, species of parasitoid, and infestation of parasitoid. The results showed the prevalence of parasitoids on A. atlas in the tea plantation Purwakarta Regency was 29.61%. There were three species of parasitoid obtained, i.e. (1) Xanthopimpla gampsura (Hymenoptera: Ichneumonidae) with a prevalence of 21.23%, this parasitoid were make a hole in the anterior pupae (5.39 ± 0.49 mm); (2) Theronia sp. (Hymenoptera: Ichneumonidae) with a prevalence of 6.15%, with hole located anterior (2.75 ± 0.21 mm), lateral (2.67 ± 0.29 mm), and the anterior-lateral holes in one pupae (2.7 ± 0.21 mm), and Parasitoid (3) Exorista sorbillans (Diptera: Tachinidae) with the prevalence of 2.23%. There were 5-8 larva of E. sorbillans / pupa of A. atlas.
Keyword: tea plantation, prevalence, parasitoid, Attacus atlas, Bogor Agricultural University (IPB)

Judul: Eksplorasi Potensi Limbah Imago Ulat Sutera Liar Attacus atlas (Lepidoptera: Saturniidae)
Abstrak: Wild Silkworm Attacus atlas is an Indonesian native germplasm from Aceh to Papua. Cultivation of wild silkworm Attacus atlas has started in line with the high market demand on the caterpillar cocoon. The purpose of this study was to determine the potential of imago waste produced by cultivation of wild silkworm Attacus atlas as a source of alternative feed ingredients and the potency as antimicrobial. Proximate analysis was done to find out nutrition in imago of Attacus atlas, antimicrobial testing using the disk method. The results of the proximate analysis test imago silkworm Attacus atlas shows that the imago contains 75.57% protein, 5.94% fat, 3.80% ash, and 14.64% crude fiber from dry matter. Attacus atlas imago extract is brown, gel, fat as a potential source of animal fat. Antimicrobial test from 96% ethanol extract of imago Attacus atlas with the disk method showed no antibacterial activity against Escherichia coli, Pseudomonas, Streptococcus, and Staphylococcus.
Keyword: nutrition content, imago, antimicrobial, Attacus atlas, Bogor Agricultural University (IPB)

Judul: Membran Komposit Kitosan-Natrium Alginat untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Composite of chitosan and sodium alginate can be utilized as base material of proton exchange membrane (PEM). The composite membranes were produced by various concentrations of chitosan-sodium alginate, namely 3:3, 3:4, 3:5, 3:6, 4:3, 5:3, and 6:3 (% b/v). The composites were characterized by using Fourier transform infrared spectrophotometer (FTIR), scanning electron microscope (SEM), and were tested for the performance as PEM from the proton conductivity obtained by using impedance spectrometer. The FTIR spectrum indicated the NH3C group at 1637.29 cm-1 and symmetrical COO group at 1253.68 cm-1 indicating interactions between chitosan and sodium alginate. SEM micrographs showed that the composite membrane was nonporous. Composite membrane with 3:5 chitosan-sodium alginate composition had the highest proton conductivity, namely 9.594 × 10-7 S/cm. Based on this research results, chitosan-sodium alginate composite membrane can be applied well in direct methanol fuel cell system.
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