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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 2 Documents
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Search results for , issue " Vol 14, No 2 (2013)" : 2 Documents clear
Antioxidan activity of Sargassum duplicatum seaweed extract Septiana, Aisyah Tri; Asnani, Ari
Jurnal Teknologi Pertanian Vol 14, No 2 (2013)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Sargassum duplicatum contains bioactive compounds that potential as antioxidants. The aims of the research were to study the antioxidant activity of S. duplicatum’s extract obtained from solvent extraction by one-step extraction and multi-step extraction methods. Solvents used were hexanes, ethyl acetate, methanol, ethanol, and water. Antioxidant activity of extract was measured by analyzing the peroxide value, malonaldehide (MDA) from linoleic acid dan 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenger capacity. The result showed that the extract of S. duplicatum could inhibit linoleic acid oxidation and scavenge free radical. Antioxidant activity on linoleic acid of methanol extract from one-step extraction method was the highest, whereas antioxidant activity of ethanol and ethyl acetate extracts was not significantly different. Methanol extract from one step extraction could inhibit peroxide formation by 86.4%, and MDA formation by 77.5%. As reference, α tocopherol inhibited peroxide formation by 89.1% and MDA formation by 60.6%. The DPPH radical scavenger capacity of all extracts of S. duplicatum was lower than α tocopherol.  Activity of antioxidant of those extracts was closely related to their total phenolic content.Key words: Extraction, antioxidant, Sargassum duplicatum
Effect of Ingredients Formulation Of Mechanics Traits on Organic Planting Bag Nugroho, Wahyunanto Agung; Rahayu, Febi Damayanti; Lutfi, Musthofa
Jurnal Teknologi Pertanian Vol 14, No 2 (2013)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The use of planting bags of organic materials in the field of agriculture is a solution to problems such as stacking plastic bag after the seedling planting is completed and inhibits plant growth due to wrong release of planting bag. Organic planting bag practices can add nutrients to the soil and has the ability to retain water, which supports the growth and development of plants. The purpose of this study is to modify the organic planting bags that have been developed using material compositions and sizes of planting bag. The research was conducted in two phases, namely the manufacture and testing of organic planting bag. Parameters observed in this study is the water content, vertical pressure testing, tensile testing, volume and mass of planting bag. Based on the results of LSD test showed that the combined treatment of combination treatment A6B6 is best used as an ingredient of organic planting bag where the comparison between coconut husk and water hyacinth at 1:7.25. To test the moisture content value obtained was 82.35%, for testing the vertical pressure is 0007 kg/cm2, and for testing the tensile stress is 0067 kg/cm2.Keywords: Organic Plnating Bag, Water hyacinth, Coconut Husk

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