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Warta IHP (Warta Industri Hasil Pertanian)
Published by Politeknik AKA Bogor
ISSN : 02151243     EISSN : 26544075     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Industrial & Manufacturing Engineering
Warta IHP (Industri Hasil Pertanian) is a Scientific Journal which is sourced from research papers, new theoretical/interpretive findings, and critical studies or reviews (by invitation) in the agro-based industry scope that cover any discipline such as: food science and technology, agricultural industry technology, chemistry and essential oils, agricultural products processing machinery, food microbiology, renewable energy, chemical analysis, and food engineering.
Arjuna Subject : -
Articles 12 Documents
 1   2 
Search results for , issue "Vol 5, No 02 (1988)" : 12 Documents clear
(Oxidation of VItamin A. Factors Affecting the Rate of Autoxidation of Vitamin A.) Muhammad Slamet Pardijanto
Warta Industri Hasil Pertanian Vol 5, No 02 (1988)
Publisher : Balai Besar Industri Agro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2108.746 KB) | DOI: 10.32765/warta ihp.v5i02.2249

Abstract

When vitamin A undergoes oxidation in fatty food, two possible types of oxidation should be considered. Firstly, there is a possibility for the vitamin A to react directly with oxygen. However, it is also possible to be oxidised by the products of autoxidation of the lipid. This work is set out to study the rate of autoxidation of vitamin A. It is shown that this process is relatively slow. The factors which influence the rate of autoxidation were also explored. 
(Activated Carbon From Coconut Shell Charcoal by “ Dry Distillation”) H G. Pohan
Warta Industri Hasil Pertanian Vol 5, No 02 (1988)
Publisher : Balai Besar Industri Agro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2108.746 KB) | DOI: 10.32765/warta ihp.v5i02.2250

Abstract

Coconut shell charcoal was converted into activated carbon by means of dry distillation method at approximately 600 degree celcius with or witout a very limited amount of oxygen. The activation time used were 1,2, and 3 hours respectively. The samples were then cooled using hot or cold water, with three different colling times of 1,2 and 3 minutes. Parameters taken in the analysis were yield, ash content and iodine adsorption. The results showed that the yield varied from 73,09% to 80,85%. The lowest ash content was 1,99% and the highest iodine adsorption was 700,17 mg/g.

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