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All Journal Warta IHP (Warta Industri Hasil Pertanian)
H G. Pohan
Balai Besar Industri Agro
Agriculture, Biological Sciences & Forestry Industrial & Manufacturing Engineering

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(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.
(The Effect Pulp, Compound of Pulp and Peel and Extraction Methods on the Characteristic of Avocado Oil (Persea Americana Miller) H G. Pohan; Bakri Rosidi; Ade Herman Suherman
Warta Industri Hasil Pertanian Vol 22, No 02 (2005)
Publisher : Balai Besar Industri Agro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3966.163 KB) | DOI: 10.32765/warta ihp.v22i02.2531

Abstract

The study on oil extraction of avocado fruit has been conducted on the effect of rwa materials and extraction method on the characteristic of avocado oil.There are two method : soaking treatment and fermentation treatment before pressing to separate the oil from avocado fruits.The solvent were hexane,diethyl ather and alcohol, whereas the fermentation times were 3,5 and 7 days.Based on the study the subtances compositions of avocado fruit were 71.72% pulp 9.51% peel and 18.77% seed.The result indicated that the best treatment for oil extraction were obtained by using the diethyl ether soaking of dried fruit and 3 days fermentation of pulp before pressing.The first treatment have produced the yield 37.76% oil,4.20% free fatty acid 2,07 mg/100 gram vitamin E, 102 IU/100 gram vitamin A and 10.3 mg/gram beta karoten while the second treatment has produced the yield 21,44% oil,7,85% free fatty acid ,1,40 mg/100 gam vitamin e ,0,5 IU/100 gram vitamin a and 18,1 mg/gram b karoten.
(The Use of Organic Acid and Thermal Adequacy on the Canned String Beans) Ngakan Timur Antara; H G. Pohan; Subagja -
Warta Industri Hasil Pertanian Vol 18, No 1-2 (2001)
Publisher : Balai Besar Industri Agro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3190.953 KB) | DOI: 10.32765/warta ihp.v18i1-2.2489

Abstract

Research on the canned string beans has been conducted .the formulation used was 1% salt,the organic acid (0.27% citric acid and 0.22% lastic acid ) and types of packaging (timplate and retort pouch) the product were stored for 0,2,4 and weeks the results showed that the result showed that the effect of storage gave the decrease of PH ,protein ,vitamin c and hardness.the microbial contents were relatively unchanged during storage .the process time required for tinplate retort pouch were 0.057 minutes respectively ,which adequate to render to canned string beans (pH< 4.5) microbiologically safe .
Co-Authors Ade Herman Suherman Bakri Rosidi Ngakan Timur Antara Subagja -