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Jurnal Teknologi Pertanian
Published by Universitas Brawijaya
ISSN : 14115131     EISSN : 25282794     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT
Jurnal Teknologi Pertanian diterbitkan oleh Fakultas Teknologi Pertanian Universitas Brawijaya untuk penyebarluasan hasil penelitian yang dilakukan oleh para peneliti dari dalam dan luar Fakultas Teknologi Pertanian Universitas Brawijaya. Jurnal Teknologi Pertanian terbit tiga kali dalam setahun, memuat tulisan hasil penelitian yang termasuk dalam lingkup disiplin ilmu pengetahuan yang terkait dengan Ilmu-ilmu Teknologi Pertanian guna menunjang pengembangan ilmu pengetahuan dan teknologi serta pembangunan nasional.
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Articles 3 Documents
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Search results for , issue " Vol 14, No 3 (2013)" : 3 Documents clear
Types and concentration affect of natural preservatives on the quality of palm sugar Naufalin, Rifda Naufalin; Yanto, Tri; Sulistyaningrum, Anna
Jurnal Teknologi Pertanian Vol 14, No 3 (2013)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Coconut sap easily damaged, so the need for the preservation process. Farmers usually use (laru) was added a solution of lime with mangosteenrind and jackfruit wood chips to conserve juice. But the availability of a preservative is limited so that not a few farmers who use synthetic preservatives, sodium metabisulfite. Some natural preservatives that can be used as an alternative to extend the shelf life of coconut sap are betel leaves, clove leaf, guava leaves, wooden cup, and tea leaves. These materials have bioactive components that can act as antimicrobia.This research aims to 1) determine the effect of the type of natural preservatives to maintain freshness of coconut sap and quality of coconut sugar, 2) determine the effect of concentration of natural preservatives to maintain freshness of coconut sap and quality of coconut sugar, 3) determine the effect of the old store on the quality of coconut sap , 4) determine the effect of combined treatment of natural preservative type and concentration of preservatives on the quality of the coconut sugar.The research consisted of two phases. The results of phase 1 showed that the coconut sap is added preservative clove leaves (M4), guava leaves (M5) and mangosteenrind (M1) with concentration of 4.5% (K1) gave pH value, levels of sucrose and the highest sensory when compared with other preservatives. The results of phase 2 showed that coconut sugar is added to the preservative mangosteen rind, clove leaf, and guava leaves not significant difference to the chemical variables (water content, ash content, reducing sugar content, and total sugar content), but gave significant influence to organoleptic variables (color, aroma, flavor, texture, and preferences)..
Utilization of Pineapple Juice Base Growth Medium for Lipid Production by Xanthophyllomyces dendrorhous Andriani, Ria Dewi; Akeprathumchai, Saengchai; Laoteng, Kobkul; Poomputsa, Kanokwan; Mekvichitsaeng, Phenjun
Jurnal Teknologi Pertanian Vol 14, No 3 (2013)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The main objective of this study lies in utilization of pineapple juice concentrate, an agricultural by-product derived from canned pineapple industry, as a low cost base growth medium to cultivate and simultaneously produce lipid by the red yeast X. dendrorhous. Pineapple juice was characterized and revealed that sucrose, glucose, and fructose were present at the concentration of 23.58, 39.14, and 36.86 g/L, respectively. In addition, acetic acid, citric acid, propionic acid concentrations of 21.70, 2751.30, and 51.00 mM were found to be the main acid in pineapple juice concentrate together with several amino acids; therefore, it possible to employ as base culture medium to cultivate X. dendrorhous. Results on cultivation of X. dendrorhous in the concentration of total sugar 10 g/L pineapple juice without supplemented of nitrogen source was satisfactory in comparison with that of yeast medium. Biomass and lipid content obtained of when cultivated X. dendrorhous in pineapple juice were of 5.14 g/L and 8.90 % in dry cell weight, respectively, while biomass and lipid content when cultivated in yeast medium were 4.88 g/L and 4.10 % in dry cell weight, respectively. Since yeast medium was rather expensive, moreover, cultivation of X. dendrorhous in pineapple juice concentrate, a low cost substrate, was fairly reasonable. Therefore, pineapple juice could be an excellent substrate for cultivating X. dendrorhous when appropriately optimized.Keywords: biomass, lipid, X. dendrorhous, pineapple juice
Studies of Antibacterials effect of Fresh Soft Coral (Geodia sp.) Extract Against Escherichia coli and Vibrio parahaemolyticus and The Content of Active Compounds Faikoh, Elok Ning; Yuliana, Denok Eka; Suhendriani, Sari; Aini, Herlin Qurotul
Jurnal Teknologi Pertanian Vol 14, No 3 (2013)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Soft corals (sponge) is a species of marine animals that live in the coral reef environment. There are more than  five thousand species found  in nature. The generally aims of this study are to diversify the utilization of diverse species of marine life in Indonesia through out  knowledge about the chemical content and its bioactive characteristic especially sponge Geodia sp. The results showed that the crude extract of fresh soft corals Geodia sp. has antibacterial activity against E. coli and Vibrio parahaemolyticus. The most effective solvent to extract secondary metabolites in a fresh Geodia sp. is chloroform. The results of GC-MS analysis was found 16 secondary metabolites in soft corals Geodia sp,. Two of the most dominant  are  Androst-4-en-3-one at 34.06% and 1,5-di-tert-butyl-1 ,3-cyclohexadine at 17.96% and both of them are  derivative of  terpenoid.Keywords: soft corals, antibacterial, secondary metabolites

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