Free radicals contribute to human health problem resulting in various human diseases, including central nervous system injury, cancer, inflammations, and the decrease of organ function related to oxidation. This condition has encouraged the effort of finding new natural antioxidant and anti-inflammatory sources. Macroalgae act as excellent natural resources due to their bioactive potential with diverse applications in various fields. Eucheuma cottonii belonging to Rhodophyceae grow abundantly along Lemukutan Island waters, however, their existence has not been exploited. This study aims to evaluate antioxidant and anti-inflammatory activities of ethanol extract of E. cottonii from Lemukutan Island waters, West Kalimantan. The observation of antioxidant activity was done using the method of DPPH (1,1-diphenyl-2-picrylhydrazyl) with UV-vis spectrophotometer, while anti-inflammatory acyivity activity was determined using the RBCs membrane stability method. The ethanolic extract of E. cottonii had potential antioxidant activity with IC50 of 127.75 ppm and was classified as moderate category. Extracts showed also anti-inflammatory acyivity activity with the concentration of 219.83 ppm. Red macroalgae E. cottonii can be used as potential natural antioxidant and anti-inflammatory agent.
Ekosistem mangrove merupakan sumber daya pesisir memiliki habitat untuk berbagai jenis biota salah satunya kepiting biola. Kepiting biola (Uca spp.) adalah salah satu biota khas mangrove berperan penting dalam menjaga keseimbangan rantai makanan dan siklus nitrogen dalam ekosistem mangrove. Tujuan dari penelitian ini untuk Mengetahui keanekaragaman jenis Uca spp. yang berada di Desa Pasir. Penelitian ini menggunakan metode purposive bedasarkan skema atau jalur MMP yang berada di Desa Pasir, di buat 4 plot pengamatan. Hasil penelitian menunjukan bahwa terdapatnya 3 spesies Uca yaitu spesies dari Uca forcipata, U. dussuimeiri dan U. rosea, dengan keanekaragaman dan keseragaman rendah serta dominansi tinggi. Dominansi tertinggi terdapat pada plot 4 yang didominansi oleh Uca forcipata, sedangkan 3 plot lainnya tergolong sedang. Faktor yang mempengaruhi tinggi rendahnya indeks keanekaragaman, keseragaman dan dominansi yaitu kondisi lingkungan meliputi pH tanah, kondisi substrat, pasang surut dan vegetasi mangrove serta pengaruh aktivitas manusia.
Pesisir Pulau Kabung merupakan wilayah Desa Karimunting Kabupaten Bengkayang yang berpenduduk sekitar 300 Kepala Keluarga dengan mata pencaharian utamanya adalah bernelayan. Kondisi perairan yang sangat beresiko karena cuaca buruk seperti gelombang kuat, tidak memungkinkan untuk melaut, sehingga menimbulkan kegiatan baru bagi masyarakat untuk berkebun dengan memanfaatkan lahan seadanya serta komoditas perkebunan yang berada di sepanjang bukit di pulau tersebut. Selain kelapa dan cengkeh, buah pala merupakan komoditas perkebunan yang banyak terdapat di wilayah ini. Pelatihan pengolahan sirop dari daging buah pala pada masyarakat Pulau Kabung adalah untuk meningkatkan keterampilan dan kesejahteraan masyarakat Pulau Kabung yang sebelumnya telah melakukan pengolahan sederhana pada buah pala dengan mengeringkan biji serta membuat manisan pala. Pelatihan dilakukan dengan cara pengolahan langsung buah pala di depan masyarakat pulau Kabung yang sekaligus sebagai peserta pada kegiatan ini. Kegiatan ini dihadiri oleh 50 orang peserta yang merupakan ibu-ibu rumah tangga dan remaja wanita. Berdasarkan kuisioner sebelum kegiatan dimulai menunjukkan sebanyak 40% sudah pernah mengenal dan membaca tentang pengolahan sirop pala, sedangkan sebanyak 30% peserta telah pernah membuat olahan sirop secara sederhana dari daging buah pala. Kemudian pada evaluasi yang dilakukan setelah kegiatan menunjukkan 80% peserta telah mampu membuat sirop Pala yang baik dengan indikasi sirop yang dihasilkan konsistensinya kental, rasanya enak dan tahan disimpan dalam 2-3 minggu.
Desa Sungai Nibung, Kubu Raya Regency, has been designated as one of the conservation areas in West Kalimantan. The coastal area of this village has potential of natural resources with a high level of diversity, including bivalves. Local community catch and sell bivalves for consumption. It is due to their high nutritional content, so that they are used by the local community as food and a source of protein. Inventory of biota is the first step to manage biological resources and support the management plan for a conservation area in this village. The study aimed to determine the diversity of bivalves in the coast of Desa Sungai Nibung, West Kalimantan. The research was conducted in December 2022. Sample collection was done using an exploratory method. Bivalves were taken, then stored in the cooling box for further identification. The result showed three bivalve species, such as Polymesoda erosa, Anadara granosa, and A. antiquata.
The high number of tourists who come to Lemukutan Island has a significant impact on the volume of waste. This activity aims to instill and increase the knowledge of tourism managers and visitors in waste management. The method used is socialization through the coastal activity of the Lemukutan Island community with students by picking up trash. Furthermore, the waste is separated into organic, plastic, metal, and glass waste. The results of the action of picking up garbage around Lemukutan Island obtained 90 kg of organic waste, 45 kg of plastic groups, and 77 kg of garbage, plastic/mica drink bottles, cans, and glass. The organic waste obtained is then buried in the ground to become compost. The results of this program show public awareness of a clean and healthy environment, especially in the tourist destination of Lemukutan Island. The success of this program is supported by the togetherness of the community and universities in determining strategic steps to protect the environment of Lemukutan Island.
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