Jurnal Sains Teknologi dan Lingkungan (JSTL)
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Potensi Limbah Daun Asam Jawa (Tamarandus Indica L.) Sebagai Teh Antidiare: Potential Waste of Tamarind Leaves (Tamarandus Indica L.) As Antidiarrheal Tea
Get PDFDiarrhea is an increased frequency and decreased consistency of stool when compared to normal individuals. Giving chemical medicine which consumed continuously, can cause negative side effects for the body. So it takes an effort to find sources of anti-diarrheal medicine that minimize side effects to the body. One source of medicine that can reduce side effects on the body is traditional medicine from local plants. One of the efforts to find a new source of anti-diarrheal medicine is to use tamarind leaves (Tamarindus indica L.) which will be developed into an anti-diarrheal bioagent. This study aims to determine the effectiveness of giving water extract of tamarind leaves (Tamarindus indica L.) fresh old leaves and young leaves to the experimental male Mus musculuus diarrhea positive. This research used three stages of research, namely the preparation of fresh old leaves and young leaves tamarind (Tamarindicus indica L.) leaf water extract, extract testing using 1% FeCl3 and UV-VIS spectrophotometer and testing using male Mus muscullus experimental animals. The results of this study indicate that the tannin content contained in the water extract of tamarind leaves (Tamarindus indica L.) is higher based on testing using 1% FeCl3 and UV-VIS septrophotometer and is more effective in overcoming diarrhea in experimental animals Mus muscullus based on changes in fecal consistency animal try to the Mus muscullus.
 Key words: diarrhea; tannins; tamarind; water extrac
Kelimpahan Dan Distribusi Fitoplankton Di Wilayah Perairan Mangrove Morosari, Demak: Abundance And Distribution Of Phytoplankton In The Mangrove Water, Morosari, Demak
Get PDFThe Demak area is an area that has changed its ecological function from land to water. This area has a mangrove ecosystem which is a conservation area. The fertility of the mangrove ecosystem is supported by the presence of nutrients in the waters. Nutrients in the waters will also affect the abundance and distribution of phytoplankton. The purpose of this study was to determine the levels of nitrate, phosphate, and the abundance and distribution of phytoplankton in the Morosari Demak mangrove conservation waters, and to determine the relationship between the abundance of phytoplankton and the levels of nitrate and phosphate in the waters. This research was carried out in May 2018 in the Morosari waters area, Demak. The sampling location consisted of 6 stations. The variables measured in this study included dissolved oxygen, pH, salinity, water temperature, nitrate, phosphate, and abundance of phytoplankton. The results showed that dissolved oxygen levels ranged from 2.18-6.11 mgL-1, pH 6.12-7.38; salinity between 18.43-31.84 o/oo; water temperature between 27.18 - 30.43 °C, nitrate 0.0029-0.2495 mgL-1; phosphate 0.0013-0.11 mgL-1. The abundance of phytoplankton obtained from this study ranged from 5,700 – 24,942 cells L-1. The dominant type of phytoplankton came from the genus Guinardia (diatom class/Bacillariophyceae) which was found in all research site
Pemetaan Spasial Kadar Kobal pada Endapan Laterit dengan Metode Ordinary Cokriging dan Inverse Distance Weighting: Spatial Mapping of Cobalt Content in Laterite Deposits Using Ordinary Cokriging Method and Inverse Distance Weighting
Get PDFCobalt is a metallic element that can be found in laterite deposits with varying concentration in each lithology zone. Objective of this study was to compare the performance of the ordinary cokriging (OCK) and inverse distance weighting (IDW) in mapping the cobalt content of laterite deposits. Cross variogram analysis used the covariable Ni and Fe, and the selection of the variogram model used the residual sum of square parameter. The IDW interpolation process uses power 1 and 2. The determination of the best method is based on the mean error parameter, and the root mean square error. Meanwhile, to determine the accuracy of the OCK estimation results, the root mean square standardized prediction error is used. The study indicates that the performance of the OCK interpolation is better than IDW, with overestimated predictions. The results of OCK interpolation showed that the distribution of 0.1-0.18% cobalt spread in the northern part and narrowed in the southern part of the study area
Kajian Penggunaan Maggot (Hermetiaillucens) Dalam Pakan Terhadap Kualitas Telur Ayam Ras: The Use of Black Soldier Flyer (Hermetia illucens) Larva in Feed of Eggs quality Laying Hens
Get PDFThis study aims to determine the effect of using Hermetia illucens maggot in feed on the internal and external quality of broiler eggs.The study used 80 laying hens aged 6 months which were divided into 4 treatments, 5 replications and each replication consisted of 4 tails. The variables observed were the external quality of eggs (egg weight, egg shape index, shell thickness, egg shell weight) and internal eggs (egg white index, yolk index, egg Haugh units, egg yolk color). The data obtained were analyzed with a completely randomized design. The average results of egg weight ranged from 56.18 g/egg - 56.98 g/egg, egg shape index between 73.91-80.54%, egg shell thickness between 0.35 mm – 0.38 mm, weight egg shells between 6.97 g/egg - 7.15 g/egg . While the egg white index ranged from 0.10 to 0.14, the yolk index ranged from 0.39 to 0.45, the Haugh unit ranged from 84.50 to 99.30, the yolk color ranged from 8.50 to 10.60. It was concluded that the use of Hermetia Illucens maggot 5%, 10%, 15% in feed resulted in external and internal quality of chicken eggs in the normal range
Pengaruh Pemupukan Dan Pemangkasan Terhadap Pertumbuhan Dan Hasil Melon (Cucumis melo L.) di Lahan Kering: Effect of Fertilization and Pruning on Growth and Yield of Melon (Cucumis melo L.) in Dry Land
Get PDFThe aim of this study was to determine the effect of a combination of NPK fertilizer and liquid organic fertilizer (POC) and pruning and its interaction on the growth and yield of melon plants on dry land. The experiment used a two-factor factorial randomized block design, namely: Application of NPK + Liquid Organic Fertilizer (POC) (b0 = 100% NPK without POC; b1 = 50% NPK + Bio-Extrem POC; b2 = 50% NPK + Organox POC) ; and Pruning (p0 = No Pruning, p1 = Pruning by maintaining 2 main branches). The results showed that pruning had a significant effect on the percentage of class C fruit quality, while fertilization treatment had no significant effect on all observed parameters. The interaction of the combination of fertilization and pruning had no significant effect on the growth and yield of melons, however, the combination of fertilizing with pruning was able to avoid fruit weight <1 kg (class C fruit quality). The use of a combination of 50% NPK + POC (Bioektrim / Organox) fertilizer and pruning can be used as a technology package in an effort to reduce the use of inorganic fertilizers and increase the yield and quality of melon fruit on dry land
Rancang Bangun Penangkap Embun Untuk Meningkatkan Efisiensi Aplikasi Pengabut Air Sebagai Model Mitigasi Urban Heat Island Masa Depan: Design And Construction Of Dew Catchers To Increase The Efficiency Of Water Sharing Applications As A Future Urban Heat Island Mitigation Model
Get PDFThis research was conducted to develop a dew-catching vehicle that will be used to support the application of a water misting system. The dew catcher design is expected to overcome the problem of too large a mist grain diameter in low-pressure water misting applications. The study was conducted using a 110 psi pressure pump and ten nozzles measuring 0.3 mm that sprayed mist from a height of 2 M. In this study, and the dew catcher design used can overcome the disturbance of water droplets due to the production of too large mist grains at low pressure misting. The maximum temperature drop that can be achieved is 7.6°C
Meningkatkan Perkecambahan Biji Kelor (Moringa oleifera Lam.) Tersimpan Menggunakan Asam Giberelat: Improving the Germination of Kelor (Moringa oleifera Lam.) Seeds Stored Using Gibberellic Acid
Get PDFGibberelin (Gibberellic acid) is a plant hormone that is responsible for the seed germination process. Germination is the process by which an inactive embryo grows and eventually forms a seedling and subsequently produces a seedling. A total of 50 seeds of Moringa (Moringa oleifera Lam.) which have been stored for 12 months and 24 months were soaked in different concentrations of Gibberellin solution (0 mg/L; 2.5 mg/L, 5.0 mg/L, 7.5 mg/L, dan 10.0 mg/L) for 24 hours and then sown in a bath soil-sand-husk charcoal (1:1:1 v/v) germination. Since 10 days after planting the seeds, observations and calculations were made on the number of seeds that germinated, the number of abnormal germinations, and the number of days when 50 percent of the seeds germinated. The results showed that the number of seeds and the speed of seed germination were proportional to the concentration of Gibberellins. Seeds treated with high concentration of Gibberellin (9 mg/L) had the highest number of germination seeds compared to seeds with lower concentration of Gibberellin. Without giving Gibberellins from the outside, Moringa seeds that have been worn out (stored 1-2 years) were not able to germinate properly
Penggunaan Maggot (Hermetiaillucens) Dalam Pakan Ayam Ras Petelur: The Use of BlackSoldierFlyer (Hermetia illucens) Larvaein Feed of Laying Hens
Get PDFThe research aimed to determine the use of Hermetia Illucens maggot in feed on the production of laying hens. 80 laying hens aged 6 months were grouped into 4 treatment groups,5 replicates, each replication consisted of 4 tails. The feed provided consisted of 50% corn+20.47% rice bran+29.52% layer concentrate (P0), 45% corn+27% rice bran+23% layer concentrate+5% maggot (PI), 45% yellow corn +27.73% rice bran+17.27% layer concentrate+10% maggot (PII), 40% corn+34.33% rice bran+10.67% layer concentrate+15% maggot ( PIII).. The data obtained were analyzed by a completely randomized design. The results of the study average daily egg production for each treatment were 61.97% (P0), 73.57% (PI), 64.10% (PII) and 59.65% (PIII). The average egg weight was 55.35g/egg/head (P0), 556.47g/egg/head (PI), 55.75 g/egg/head (PII) and 55.84g/egg/head (PIII). Feed consumption was 110.23 g/head/day (P0), 112.21g/head/day (PI), 111.75g/head/day (PII) and 103.55g/head/day. Feed conversion was 3.45 (P0)., 2.81 (PI), 3.20 (PII) and 3.21 (PIII). Egg protein was 12.17% (P0), 12.98% (P1), 13.83% (PII), 14.53% (PIII). Egg cholesterol was 149.25mg/dl (P0), 153.75mg/dl (P1), 181.25mg/dl (P2) and 175.00mg/dl (P3). Beconcluded that the use of Hermetia Illucens maggot 5%, 10%, 15% in feed has not significant effect (P>0.05). on the egg production, egg weight, consumption and feed conversion and significant effect (P< 0.05) on the protein and colesterol of laying hens
Potensi Ampas Kopi Dan Kulit Kopi Sebagai Bahan Baku Alternatif Pada Pakan Ikan: Potential Use Of Coffee Ground And Coffee Silver Skin As Alternative Ingredients In Fish Feed
Get PDFThe ever-increasing demand for and consumption of coffee from year-to-year results in a rise in waste, particularly coffee grounds and coffee skins. Multiple attempts have been made to utilize this waste in the cosmetics, pharmaceuticals, and industrial sectors. As a result of the waste's nutritious content, there is a significant potential for its usage as fish feed's ingredients. However, only a small number of researchers have examined the use of coffee grinds and coffee skins in aquaculture, particularly for tilapia (Oreochromis niloticus) and Olive flounder (Paralichthys olivaceaus). This article aims to provide an overview of the potential use of coffee grounds and coffee skin in the world of aquaculture, particularly fish feed, in terms of nutrients and their application in enhancing the quality of these raw materials utilizing a fermentation process aided by probiotic microorganisms
Corn Value Chain in Dompu: Constraints and Alternative Policy Interventions to Improve the Value Chain
Get PDFEven though corn has been a common agriculture commodity growing by Dompu farmers, few issues remain such as limited input supply especially fertilisers. As results, farmers could not follow the recomended fertiliser doses that lead to low productivity. This study was conducted to clearly identify the issues and constraints along the corn value chain, and identify options to address the issues. Quantitative and qualitative menthods were applied to the study. The findings from this study highlight that the corn value chain was very simple where farmers sell their corn to the village level collectors named as palele, then the palele sell the corn to the sub-district level collecotrs, and then they sell to the exporters. It is the roles of these exporters to sell the corn to other island and or to international markets. Issues found in the corn value chain are: the limited supply of fertilisers, broadcasting technique for fertilizer application, corn price fluctuation, and low corn productivity. It is recomended that the local government take few policy options to address the issues, and improve the value chain performance that lead to better smallholder farmers’ livelihood improvement