yrammuS 要概94Satria Bijaksana95HusnaNugrahapraja96Rino Rakhmata MuktiMagnetic-based Method for Field-screening of Ni Hyperaccumulator Plants (Project 2019)Response of Microbial Community Structure and Dynamics of Chitosan Treated Banana during Fruit Ripening using Omics Technology Approach (Project 2019)Synthesis of Nano Mordenite Zeolite in the Absence of OSDA for Bioplastic Production (Project 2019)65Rep. Grant. Res., Asahi Glass Foundation (2020)Ni or nickel hyperaccumulators are plants that can absorb a large amount of Ni in their tissues and therefore prospective in phytomining and phytoremediation. In this study, we investigated the use magnetic characterizations for screening directly Ni hyperaccumulators and non-Ni hyperaccumulators from ultramafic regions. The characterization involves well known Ni hyperaccumulators (Alyssum murale and Alyssum corsicum) that were cultivated on lateritic soils as well as scores of natural plants that are suspected to be Ni hyperaccumulators. This study used the following methods: inductively coupled plasma optical emission spectroscopy analysis, atomic absorption spectroscopy analysis, X-ray fluorescence analysis, magnetic susceptibility measurement, acquisition of hysteresis curves, and analysis of the thermomagnetic properties. The results showed that A. murale, A. corsicum as well as two natural species have positive magnetic susceptibility values implying that magnetic susceptibility could be potentially used to screen for prospective Ni hyperaccumulators.The aim of this study was to determine and analyze the profile of the microbial community of banana treated with chitosan to delay ripening. Therefore, the results of this study would contribute scientifically as well as provide information for banana improvement during post-harvest treatment. Pulp and peel from the first and seventh day of fruit ripening from Cavendish banana (Musa acuminata) cultivar were used as samples. Some bananas were treated with chitosan 1.25% to delay the ripening process while others were left untreated as control. In total there were eight types of samples. Metagenomics analysis was carried out by doing DNA iso-lation, 16S rRNA PCR, NGS metagenomics and bioinformatics analysis using MOTHUR. From the eight samples, a total of 158 genera were successfully isolated, with genus Alcaligenes as the most dominant at 65.59%, followed by Pseudomonas, Acinetobacter and Thermus consecutively at 7.25%, 5.76% and 2.64%.The presence of organic structure directing agent (OSDA) in zeolite synthesis has given disadvantage to environment and production cost. Recent results have proven that the utilization of seed assisted synthesis for obtaining zeolite may avoid the use of OSDA. In addition, nano sized zeolite crystal product which enhance catalytic conversion rate by increasing the surface area can be obtained. In this report, we would like to convey that the absence of OSDA as well as seed in the synthesis of mordenite (MOR) zeolite has increased opportunity to result MOR framework with rod-assembled morphology. Rod-assembled MOR zeolite was directly synthesized by means of Two-Stage Temperature-Crystallization method (TSTC) in the absence of OSDA and seed. The synthesis was divided into two steps, i.e. the first stage was carried out at a lower temperature (90 °C) for 24-72 hours, which supports the formation of a large number of crystal nuclei and the
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