Judul: Kelimpahan Kepiting Bakau (Scylla sp) Di Kawasan Hutan Mangrove KPH Batu Ampar, Kabupaten Pontianak, Kalimantan Barat
Abstrak: Indonesia memiliki kawasan hutan mangrove seluas lebih dari 4 juta hektar yang tersebar hampir di seluruh pulau-pulau besar Indonesia seperti pulau Jawa, Kalimantan, Sulawesi, dan Irian Jaya. Manfaat atau fungsi dari hutan mangrove dapat dilihat dari berbagai aspek diantaranya aspek biologi, aspek ekologi, dan aspek industri. Di propinsi Kalimantan Barat khususnya daerah Kecamatan Batu Ampar, kawasan hutan mangrove dikelola oleh PT. INHUTANI I1 dan PT. Bina Mandha Pratama Chips Industries (PT. BMPCI) yang bekerjasama dalam bidang industri arang bakau, untuk memenuhi bahan dasar dari arang tersebut kedua perusahaan melakukan kegiatan eksploitasi dengan sistem tebang pilih. Akibat adanya kegiatan penebangan tersebut lingkungan mengalami tekanan, terjadi perubahan secara fisik, dan terganggunya kehidupan biota khususnya yang tinggal di dalam SUBSlRAT hutan mangrove.
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Judul: Keterkaitan kelimpahan kepiting bakau (Scylla.spp) dengan ketersediaan makanan alami di kawasan hutan mangrove (Studi kasus di kabupaten Tanjung Jabung Timur, Provinsi Jambi)
Abstrak: Penelitian ini bertujuan untuk mengetahui keterkaitan antara kelimpahan kepiting bakau dengan ketersediaan makanan alami dan kondisi hutan mangrove di kawasan lokasi penelitian. Lokasi penelitian ditentukan berdasarkan kerapatan hutan mangrove secara visual, dan secara teori dengan menetapkan transek-transek garis dari arah laut ke arah darat (tegak lurus garis pantai sepanjang zonasi hutan mangrove yang ada).
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Judul: Durability of Specific Immunoglobulin (Ig) Y Againts Influenza and Covid-19 in Sunscreen
Abstrak: The benefit of specific immunoglobulin Y (Ig Y) as an active ingredient in personal care products such as sunscreen has not been properly studied. Our study aims to evaluate the reliability of specific IgY against influenza and the COVID-19 virus in a sample sunscreen product. Specific IgY influenza and COVID-19 viruses were inserted in the sample sunscreen at two concentrations of 0.1% and 0.25%. Three treatments were observed: control (C) sunscreen without IgY, treatment 1 (T1) sunscreen with 0.1% IgY, and treatment 2 (T2) sunscreen with 0.25% IgY. Organoleptic observations were carried out to monitor changes in aroma, color, and texture, and sunscreen sampling was done every week for 6 weeks. The durability of IgY was evaluated using an enzyme-linked immunosorbent assay (ELISA) and a neutralization assay. Organoleptic observation from weeks 1 to 6 showed consistency in its aroma, color, and texture. Enzyme-linked immunosorbent assay and neutralization assay (NA) results of the T1 and T2 groups showed negative results except for sample T1 at week 5, which showed a positive result in the Influenza A ELISA. Based on the results, it seems that IgY concentrations of 0.1% or 0.25% were not optimal. However, this negative result might be due to low concentration of the IgY and the presence of beeswax, which inhibits IgY and causes it to dissolve in distilled water, thus preventing it from being detected in the assay.
Keyword: Immunoglobulin Y, Sunscreen, Influenza, COVID-19, Biological Activity