Virgin coconut oil (VCO) is one of the processed products from coconuts that has high economic value. This economic value is triggered by the benefits of VCO. The people of Oma Village are located on the coast of Haruku Island which is very overgrown with coconut plants. The abundance of coconut plants has not been maximally utilized by the Oma village community. This problem prompted training to make VCO for the Oma village community, Haruku Island. This community service is carried out based on counseling and training on making VCO to the Oma Village community. Counseling was carried out to convey about VCO, the benefits of VCO and how to make VCO. The training is carried out by demonstrating/demonstrating the procedure for making VCO and providing tools and materials to partners to be able to produce VCO independently. The results of VCO products from the Oma Village community are reported to the service team and used as an indicator of the success of the VCO making training. The results obtained provide information that this product is a product that can be cultivated by the Oma village community as an opportunity to improve their economy.
Banyak kandungan senyawa kimia bermanfaat dalam makroalga yang bernilai ekonomi tinggi tetapi belum diteliti secara luas, seperti pigmen fotosintesis. Peningkatan kebutuhan pigmen fotosintesis pada dunia industri menyebabkan pencarian sumber alternatif pigmen fotosintesis masih terus dilakukan diantaranya dari makroalga. Penelitian ini bertujuan untuk mengetahuipengaruh lama penyimpanan ekstrak kasar makroalga Ulva lactuca terhadap kestabilan pigmen fotosintesis. Tahapan penelitian meliputi, isolasi pigmen fotosintesis, pemurnian menggunakan kromatografi kolom silika, karakterisasi pigmen fotosintesis dengan KLT dan spektrofotometer UV–Vis. Hasil KLT dari ekstrak kasar Ulva lactuca menunjukkan perbedaan jumlah dan jenis pigmen fotosintesis yang mencolok antara ekstrak kasar Ulva lactuca yang lansung diekstrak dan yang dibiarkan kurang lebih 3 hari. Pada hasil kromarogram menunjukkan ada 7 fraksi pigmen fotosintesis dan memiliki warna yang sangat mencolok yang diekstrak secara langsung sedangkan ekstrak kasar yang dibiarkan kurang lebih 3 hari menunjukkan hanya 5 fraksi pigmen fotosintesis dengan warna yang pucat. Fraksinasi dengan kromatografi kolom silika gel menunjukkan adanya pigmen fotosintesis sebanyak 29 fraksi. Setelah diindentifikasi dengan spektofotometer UV–Vis ada 4 fraksi utama yaitu ß-karoten, fukoxantin, klorofil a,dan feofitin a. Lama penyimpanan terhadap ekstrak kasar Ulva lactuca mempengaruhi pigmen fotosintesis secara kualitatif dan kuantitatif.
Physical and chemical factors influence antioxidant activity. One of the physical factors that can affect antioxidant activity is heat. This study aims to determine the phytochemical content and the effect of heating the crude extract of marine macroalgae Padina australis on antioxidant activity. The research method used, namely maceration using methanol as a solvent to obtain a crude extract, then evaporation of the solvent at a temperature of 45 °C. Furthermore, phytochemical tests were carried out, characterization using TLC and UV-Vis spectrophotometer, and determination of free radical scavenging activity of DPPH. The results of the phytochemical test showed that the crude extract of Padina australis was positive for bioactive compounds, namely saponins, alkaloids, terpenoids, steroids, and flavonoids. Characterization by TLC and UV-Vis spectrophotometer showed the presence of secondary metabolites, namely chlorophyll a and carotenoids. The use of temperature in the solvent evaporation process affects the stability of bioactive compounds and secondary metabolites. The results of the antioxidant activity test (IC50) of the crude extract of Padina australis against DPPH obtained 163 ppm, so it is classified as an antioxidant in the medium category.
The chitosan isolation from crab crab waste (Portunus sanginolentus) has been carried out. Chitin production is carried out by the de-proteination, demineralization and depigmentation processes. Chitosan biopolymer is produced from chitin through de-acetylation method using base solution (NaOH) and the addition of NaBH4 which aims to increase the degree of de-acetylation (DD) of chitosan. The results of 25 g of chitin obtained chitosan amounted to 16.67 g (66.68%). Chitin and Chitosan were identified by a Fourier Transform Infrared (FT-IR) spectrophotometer.
Desa Morella merupakan desa adat yang terletak di Kecamatan Leihitu Maluku Tengah dan memiliki salah satu potensi kelapa yang cukup banyak. Dalam memanfaatkan daging buah kelapa, biasanya air kelapa dibuang begitu saja sebagai limbah. Jurusan Kimia Universitas Pattimura melakukan kegiatan pengabdian masyarakat dengan tujuan untuk memanfaatkan limbah air kelapa yang tidak terpakai menjadi produk bernilai ekonomis salah satunya adalah produk kecap manis. Kegiatan pengabdian masyarakat di Desa Morella ini, dilakukan dengan dua metode yaitu penyuluhan dan pelatihan. Penyuluhan dilakukan dengan cara memberikan informasi tentang pemanfaatan air kelapa menjadi produk bernilai ekonomis dan cara pemasaran produk yang dihasilkan. Sedangkan pelatihan dilakukan dengan cara demonstrasi secara langsung produk kecap manis. Produk kecap manis yang berasal dari limbah air kelapa memiliki kelebihan dari kecap manis produk kedelai yaitu; rasanya enak, bahan baku yang digunakan merupakan limbah buangan yang tidak perlu dibeli, dan waktu produksi cepat. Kecap manis yang dihasilkan dapat digunakan sendiri atau bisa dijadikan industri rumahan dalam upaya meningkatkan kesejahteraan keluarga.
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