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All Journal Jurnal Sains & Teknologi Lingkungan Jurnal Penelitian Pendidikan IPA (JPPIPA) Makara Journal of Science
Jayanti, Ervina Titi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Materials Science & Nanotechnology Physics

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Phytoremediation of Lead Heavy Metals in the Mangrove Ecosystem of the Lembar Harbor Area, West Lombok Regency, Indonesia Rahman/Firman, Firman Ali; Ihsan, Muhammad Shohibul; Agustini, Dwi; Jayanti, Ervina Titi
Makara Journal of Science Vol. 29, No. 2
Publisher : UI Scholars Hub

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Abstract

Mangroves play a vital role as bioindicator plants in port areas with the potential for non-essential heavy metal contamination. This study aimed to determine the potential for phytoremediation of lead heavy metal in mangrove vegetation resulting from port operations. The research was conducted in the mangrove ecosystem of Lembar Harbor, West Lombok Regency, West Nusa Tenggara, Indonesia. Substrate, leaf, and root samples were collected using a purposive random sampling technique and analysis for testing the lead heavy metal content using atomic absorption spectrophotometry. The results showed that the average heavy metal content of lead accumulated in the substrate in each mangrove stand (14.35 ± 2.711 ppm) was higher than the average heavy metal content in the roots (5.48 ± 2.300 ppm) and leaves (3.55 ± 1.623 ppm). Further analysis showed that nine out of 10 mangrove species act as a phytostabilizer against the lead heavy metal with an average translocation factor of no more than one (0.59 ± 0.176). Only Rhizophora stylosa showed the ability for phytoextraction with a translocation factor more than one (1.488). All types of mangroves in the Lembar Harbor area had a bioconcentration factor lower than one, with an average leaf bioconcentration factor of 0.25 ± 0.115 ppm and a root bioconcentration factor of 0.39 ± 0.161 ppm. The ecological function of the mangroves in Lembar Harbor is more specifically an excluder plant for lead heavy metal bioaccumulation with a biological concentration factor (BCF) < 1 and phytoremediation (FTD) < 1, which can be affected by the low accumulated BCF of leaves and roots.
Analisis Kandungan Merkuri dalam Sedimen dan Keong Sawah (Pila Ampullacea Linn.) Danau Lebo Sumbawa Barat Nabila, Riska; Purwati, Nining; Jayanti, Ervina Titi
Jurnal Sains dan Teknologi Lingkungan Vol. 16 No. 1 (2024): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol16.iss1.art4

Abstract

Traditional gold mining around Lake Lebo has a positive impact on people's income, but it has a negative impact on the waters of Lake Lebo. This is evidenced by a 2016 study conducted on 2016 that reported mercury pollution in the sediments and fish of Lake Lebo. The objective of this study is to determine the mercury content in the sediments of Lake Lebo, West Sumbawa. The sampling employed purposive sampling with four research stations based on their utilization around Lake Lebo. The mercury content in the samples was tested using an AAS (Atomic Absorption Spectrophotometer). The sediments of Lake Lebo Meraran contain 0.70 ppm of mercury (lightly polluted). The Meraran Paddy Field Sediment contains 0.31 ppm of mercury (tolerable). The sediments of Lake Lebo Seloto contain 0.22 ppm of mercury (normal). The mercury content in Lake Lebo Rice Snails is less than 0.0001 (undetectable), making them safe for public consumption. Several factors contribute to the undetected mercury in the samples, namely rainfall, floods, waste storage, and phytoremediation by aquatic plants.
The Effect of Taro Starch (Colocasia esculenta L Schoott) Edible Coating on the Quality of Red Chili (Capsicum annuum L) Purwati, Nining; Jayanti, Ervina Titi; Ariska, Wiwik
Jurnal Penelitian Pendidikan IPA Vol 10 No 2 (2024): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i2.4078

Abstract

Edible coating is a barrier, thin layer of consumable material to maintain moisture and slow down the respiration process of a product. In order to preserve the quality of red chili, this study aims to find the ideal taro starch concentration to use as an edible covering. Six treatments of taro starch concentration—0, 1, 2, 3, 4, and 5%—were used in experimental research utilizing a completely randomized design (CRD). Hedonic organoleptic testing produced the data. Analysis of variance (ANOVA) is then performed based on the level of panelist preference, and an LSD test is applied if there is a significant difference. The findings indicated that a 5% concentration of taro starch works best as an edible covering material to preserve the quality of red chili
Co-Authors Ariska, Wiwik Dwi Agustini, Dwi Hervina Hervina Ihsan, Muhammad Shohibul Lestari Lestari Nabila, Riska Purwati, Nining Rahman/Firman, Firman Ali Siti Nurhidayati