Safira Eka Aprianti
Program Studi Bioteknologi Tanah dan Lingkungan, Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University, Kampus IPB Darmaga, Bogor 16680

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Pengaruh Aplikasi Bioarang dan Zeolit pada Fluks CO2, Populasi Mikrob, dan Aktivitas Enzim Mikrob pada Gambut Safira Eka Aprianti; Rahayu Widyastuti; Heru Bagus Pulunggono; Laksmita Prima Santi
Jurnal Ilmu Pertanian Indonesia Vol. 28 No. 1 (2023): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.28.1.170

Abstract

Oil palm plantation on peatlands is considered to contribute to increasing global warming by releasing CO2 as one of the greenhouse gases that cause global warming. The addition of ameliorants, such as biochar and zeolite, can absorb CO2 from soil respiration and store and filter it in their molecular pores. This research aimed to study the effect of ameliorant application on the CO2 flux, water content, microbial population, and enzyme activities. Ameliorant was applied to peat soil with two factors. The first factor was an ameliorant combination with 6 treatment levels: control (A0); zeolite (A1); biochar (A2); zeolite:biochar 75:25; zeolite:biochar 25:75; zeolite:biochar 50:50, and the second factor was 3 levels dose of treatment (% w/w): 1.5%, 3%, and 4.5%. Peat flux CO2 and water content were measured monthly for four months in the laboratory. Without mixing with biochar (A1), the results showed that zeolite suppressed CO2 flux and suppressed the decrease of water content better than other ameliorant combinations. However, different ameliorant dosage percentages did not show any significant results. Ameliorant application and incubation affected the microbial population and enzyme activities, and the results were varied. Chemical characteristics changed after 4 months of incubation. In conclusion, our results indicate that only zeolite amendment can suppress CO2 flux and decrease water content but did not affect microbial population dynamics and enzyme activities. Keywords: ameliorant, CO2 flux, enzyme activities, lignocellulolytic microbes, peat
Evaluasi Mutu dan Keamanan Pangan Tuna (Thunnus Albacares) di Perairan Maluku Utara, Indonesia Achmad, M Djanib; Ramli, Husnul Khatimah; Aprianti, Eka; Abdurrahman, Nurindrasari
Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 19, No 2 (2024): Desember 2024
Publisher : Politeknik - Ahli Usaha Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jpbkp.v19i2.1046

Abstract

Laut Maluku merupakan salah satu daerah tangkapan ikan tuna dengan produksi yang cukup tinggi, terutama di perairan Maluku Utara. Zona operasi penangkapan ikan tuna di Maluku Utara berada di perairan pulau Bacan, Tidore, Ternate, Obi, Sanana, dan Morotai. Isu pencemaran perairan yang berimplikasi terhadap perikanan karena beberapa jenis polutan bersifat persisten, akumulatif dan tidak dapat diuraikan, hal ini sejalan dengan isu keamanan pangan yang terjadi di Indonesia. Ikan tuna dapat menyebabkan permasalahan kesehatan pada manusia karena terjadinya kontaminasi mikroba dan kontaminasi kimia pada saat proses penangkapan, penanganan maupun pengolahan. Penelitian ini bertujuan untuk mengevaluasi kualitas dan keamanan ikan Thunnus albacares dengan beberapa parameter uji yaitu Organoleptik, Angka Lempeng Total (ALT), uji Histamin dan Merkuri. Sample dikumpulkan dari hasil tangkapan nelayan dengan lokasi fishing ground di sekitar perairan Sanana, perairan Fala, Tobelo, Ternate, Pulau Obi dan Morotai. Evaluasi organoleptik dilakukan untuk melihat kondisi ikan keseluruhan (mata, insang, lendir, daging, bau, dan tekstur), kondisi ikan dalam keadaan segar dengan nilai rata-rata 7. Nilai ALT menunjukkan rata-rata 5x103 cfu/g, kandungan histamin 2,4 ppm dan akumulasi logam berat pada daging Thunnus albacares berada di bawah batas legal yaitu 1 ppm. Tidak ditemukan nilai uji diatas ambang batas legal. Thunnus albacares yang ditangkap di perairan Maluku Utara, Indonesia berkualitas baik dan aman untuk dikonsumsi.ABSTRACTMaluku Sea is one of the tuna fishing areas with quite high production, especially in the waters of North Maluku. The tuna fishing operation zone in North Maluku is in the waters of Bacan, Tidore, Ternate, Obi, Sanana, Morotai and Ambon islands. The issue of water pollution which has implications for fisheries is increasingly receiving world attention because several types of pollutants are persistent, accumulative and cannot be described, this is in line with the food safety issue that occurs in Indonesia. Tuna fish can cause health problems due to microbial contamination and chemical contamination during the catching, handling and processing processes. This study aims to evaluate the quality and safety of Thunnus albacares fish using several test parameters, namely Organoleptic, Total Plate Number (ALT), Histamine and Mercury tests. Samples were collected from fishermen’s catches at fishing ground locations around Sanana waters, Fala waters, Tobelo, Ternate, Obi Island and Morotai. Organoleptic evaluation was carried out to see the overall condition of the fish (eyes, gills, mucus, flesh, smell and texture), the condition of the fish was fresh with an average value of 7. The ALT value showed an average of 5x103 CFU/g, the histamine content was 2.4 ppm/g, and the accumulation of heavy metals in Thunnus albacares meat was below the legal limit, namely 1 ppm/g. No test values were found above the legal threshold. Thunnus albacares caught in the waters of North Maluku, Indonesia are of good quality and safe for consumption.Keyword: food safety, histamine, heavy metal