a b s t r a c t a r t i c l e i n f oThe termiticidal activity of n-hexane and methanol fractions of Acorus calamus Linn rhizomes against Coptotermes curvignathus Holmgren was investigated. Both fractions have demonstrated strong termiticidal activity. The activity of n-hexane fraction was stronger than that of the methanol fraction. Based on GC-MS data, β-asarone was found to be a major constituent of n-hexane fraction (70.1%) and isolation of β-asarone was carried out on column chromatography to afford as a yellow oil in 59.1% yield. Furthermore, the antitermite properties of β-asarone and α-asarone of the isomer were investigated. Our data suggested that the two asarone isomers have insect control potential. These findings lead to the discovery of more environmentally friendly termiticides against C. curvignathus.
Anak pada usia 10-12 tahun umumnya mulai memasuki masa praremaja atau awal masa pubertas. Permasalahan status gizi pada anak usia praremaja ini dapat berdampak buruk terhadap pertumbuhan, perkembangan, produktivitas serta kecerdasan anak sehingga kegiatan ini penting untuk dilakukan. Pemeriksaan status gizi anak dilakukan di SDN 159 Bengkulu Utara secara khusus pada anak berusia 10-12 tahun dengan tujuan untuk mengetahui status gizinya berdasarkan nilai Indeks Massa Tubuh (IMT), dan mengedukasi anak akan pentingnya tubuh yang sehat serta pentingnya memilih makanan yang sehat. Pengambilan data dilakukan menggunakan metode purposive sampling terhadap anak yang memenuhi syarat inklusi. Berdasarkan hasil pemeriksaan status gizi dari 60 orang anak, 78,3% berada dalam kategori status gizi normal, 3,3% kategori kurus, 8,4% gemuk, 10% obesitas, dan tidak ditemukan anak dengan kategori sangat kurus. Anak-anak sudah mampu memahami pentingnya tubuh yang sehat serta pentingnya memilih makanan yang sehat. Anak-anak secara sederhana sudah mampu mendefinisikan tubuh yang sehat dan tidak sehat, mampu mengidentifikasi contoh makanan bergizi dan makanan yang kurang bergizi. Kegiatan ini merupakan kegiatan yang baik dan bermanfaat baik untuk anak, orang tua ataupun sekolah dalam meningkatkan kepedulian terhadap pentingnya tubuh yang sehat dan gizi yang baik.
Endophytic bacteria are bacteria that live in plant tissue without causing disease in their host. In general, endophytic bacteria enter through stomata or wounds in plants by producing cellulase enzymes to degrade cellulose in plant cell walls that contain cellulose, one of which is yellow root (Arcangelisia flava (L.) Merr). The purpose of this study was to isolate endophytic bacteria from yellow roots from Enggano Island, Bengkulu Province, and to identify morphologically, Gram staining and biochemical tests as well as testing the potential of endophytic bacteria in producing cellulase enzymes. Isolation was carried out by the patch method with surface sterilization, using 70% alcohol and 5.25% sodium hypochlorite and then put on NA media that had been treated with Nystatin. The isolates obtained were then tested for their ability to produce cellulase enzymes by scratching them onto CMC media, then measuring the forming of clear zone. The results showed that from 29 isolates, 26 of them were able to degrade cellulose. AKEBG26 and AKEBG25 isolates had a higher ability to hydrolyze cellulose with cellolulitic potential index (IP) were about ±2.90 and ±1.51. Identification based on gram staining and biochemical tests of 8 endophytic bacterial isolates that had the potential to produce cellulase were closely related to 3 genera, namely Bacillus, Amphibacillus, and Micrococcus.
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