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All Journal Journal of Degraded and Mining Lands Management Jurnal Solum Jurnal Dehasen Untuk Negeri PERTANIAN TROPIK
Hijri, Nurul
Program Studi Magister Jurusan Ilmu Tanah, Fakultas Pertanian, Universitas Andalas
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Environmental Science Public Health Other

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Aktivitas β-Glukosidase pada Beberapa Kelas Penggunaan Lahan Gambut Tropis di Pesisir Selatan, Sumatera Barat nurul hijri; Mimien Harianti; Zuldadan Naspendra; Teguh Budi Prasetyo
Jurnal Solum Vol 19, No 1 (2022)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (140.332 KB) | DOI: 10.25077/jsolum.19.1.15-23.2022

Abstract

Most of the peatlands in Pesisir Selatan, West Sumatra have been converted into agricultural activities. Due to drainage, the peat decomposition process becomes faster. The activity of β-glucosidase is one of the enzymes that can be used as an indicator of the decomposition of organic matter and produces greenhouse gas emissions, likes CO2. Therefore, this study was conducted to identify the activity of β-glucosidase in several land uses in Pesisir Selatan peatlands. Observations were performed in several land-use types consisting of agricultural land (LP), bare land (LT), shrubs (SB), smallholder oil palm plantations (PSr), private company oil palm plantations (PSs), and forests (H). The activity of β-glucosidase was analyzed by using salicin and Na-acetate methods. The results of this study showed that the highest β-glucosidase activity was found in agricultural land use (LP). Based on the land use types, the activity of β-glucosidase follows agricultural land (LP) 3.42 μg.g-1.jam-1 > bare land (LT) 2.26 μg.g-1.jam-1 > shrubs (SB) 1.63 μg.g-1.jam-1 > smallholder oil palm plantations (PSR) 1.31 μg.g-1.jam-1 > private company oil palm plantations (PSs) 1.28 μg.g-1.jam-1 > forest (H) 0.80 μg.g-1.jam-1. Soil characteristic that significantly affects enzyme activity is water content where the higher the water content, the lower the β-glucosidase activity, and vice versa. Based on this study can be concluded that the change in land use from natural land to agricultural land triggers an increase in the activity of enzymes in decomposed peat materials.Key words: β-glucosidase, enzyme, palm plantation, land-use, peatland
Laccase activity as an indicator of peat degrading microbes in several types of peatlands use in West Sumatra, Indonesia Hijri, Nurul; Naspendra, Zuldadan; Harianti, Mimien; Budi Prasetyo, Teguh
Jurnal Online Pertanian Tropik Vol. 9 No. 1 (2022): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (735.177 KB) | DOI: 10.32734/jopt.v9i1.8636

Abstract

Land clearing and drainage activities on peatlands had boosted the decomposition rate of organic matter, caused by an increase in soil temperature and soil microbial activity. Enzyme activity is a sensitive indicator to measure changes in the decomposition process. The enzyme activity associated with the decomposition of organic matter is Laccase. This research aimed to study Laccase as an indicator of lignin degradation in several types of peatland use in Pesisir Selatan, West Sumatra, namely forests, shrubs, oil palm plantations, agricultural land, and bare land. The Laccase activity was measured by using the ABTS method. The results of our study show that Laccase activity in several types of peatland use from the highest to the lowest follows the order: agricultural land (LP) 3.20 μg.g-1.hour-1 > bare land (LT) 1.46 μg.g-1.hour-1 > shrub (SB) 1.17 μg.g-1.hour-1 > smallholder oil palm plantation (PSr) 0.66 μg.g-1.hour-1 > private company oil palm plantation (PSs) 0.70 μg.g-1.hour-1 > forest (H) 0.06 μg.g-1.hour-1. Soil characteristics that affect the enzyme activity are water content, which is negatively correlated with the Laccase enzyme. The higher the water content in the peat material, the lower the Laccase activity. Therefore, it is necessary to control the soil water content high to prevent the rate of peat decomposition. Keywords: Laccase, enzyme, oil palm plantation, land use, peatland.
The impact of sand and clay substratum types on the properties of tropical peat soils and oil palm (Elaeis guineensis) production Naspendra, Zuldadan; Hijri, Nurul; Awalina, Rahmi; Harianti, Mimien; Hermansah, Hermansah
Journal of Degraded and Mining Lands Management Vol. 12 No. 3 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.123.7817

Abstract

Research on peatlands has become increasingly interesting in recent years, particularly in tropical regions. In these regions, including Indonesia, peatlands develop over sand and clay substrata and are widely utilized for oil palm cultivation. However, the influence of substratum type on palm yield remains poorly understood. This study aimed to a) investigate the morphological and physical characteristics of peat soils formed over sand and clay substrata and b) examine the relationship between peat soil substratum types (sand and clay) and oil palm production. Soil samples were collected from three blocks of an oil palm plantation in Pesisir Selatan, West Sumatra, and then were analyzed in a soil laboratory. Additionally, fresh fruit bunch (FFB) yield data from the past six years for each block were also collected from the plantation records. The results indicated that peat soil formed over clay substratum (L) was more mature (sapric), with lower fiber content, higher ash content, lower organic matter content, higher moisture content, and higher pH compared to peat soils formed over sand substratum (P1 and P2). The average annual fresh fruit bunch production from palms cultivated on peat soil with a clay substratum (19.68-20.85 t/ha/yr) was 11-16% higher than that of palms on peat soil with sand substratum (23.52 t/ha/yr). Among the peat soil properties analyzed, water content, ash content, and soil pH had the most significant positive effects on oil palm production. These findings highlight the critical role of substratum type in influencing oil palm yield.
Implementasi Mata Kuliah Pengemasan dan Penyimpanan Pangan dalam Kegiatan Pengabdian Masyarakat : Penerapan Labeling pada Kemasan Produk Pangan Almaniar, Siska; Pamungkas, Ilham Wahyu; Agustin, Venny; Hijri, Nurul; Dwi Cahyo, Ali Mas'ud
Jurnal Dehasen Untuk Negeri Vol 4 No 2 (2025): Juli
Publisher : LPPJPHKI Universitas Dehasen Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jdun.v4i2.8914

Abstract

Labels on food packaging play a crucial role in providing accurate information to consumers regarding product contents, safety, and usage instructions. Clear and regulated labeling helps consumers make informed decisions and avoid health risks due to improper consumption. A labeling awareness program was conducted using the Project Based Learning (PjBL) approach within the Food Packaging and Storage course at Politeknik Negeri Sriwijaya. Students were actively involved in material preparation, information delivery, and interactive discussions aimed at enhancing both conceptual understanding and practical skills. The presented material included definitions of labeling, its functions and benefits, as well as mandatory components such as product name, composition, net weight, expiration date, and distribution permit, in accordance with BPOM regulations and SNI standards. The results showed that students improved their understanding of proper food labeling and recognized its role as a communication tool between producers and consumers. Additionally, the activity positively impacted students’ readiness to face real-world business challenges, particularly in developing food products within small-scale industries or MSMEs. This program is expected to serve as a starting point for community empowerment through better understanding and innovation in food product labeling
Co-Authors Almaniar, Siska Awalina, Rahmi Budi Prasetyo, Teguh Dwi Cahyo, Ali Mas'ud Harianti, Mimien Hermansah Hermansah, Hermansah Mimien Harianti Pamungkas, Ilham Wahyu Teguh Budi Prasetyo Venny Agustin Zuldadan Naspendra