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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
( A Study on Preventing the Fermentation During The Collection of Palm Sap As A Raw Material For Palm Sugar) -, Sardjono; A. Dachlan, M
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)

Abstract

A study on preventing the fermentation during the collection of palm sap has been done. The solution of 0.1% sodium metabisulphite, lime powder and ginggihiang leaf (Leea aequata Linn.) were used as preservatives. The bamboo and paralon tubes were used for collecting the sap. The result showed that the preservative was absolutely needed for preventing the fermentation during the sap collection. The average of pH value of sap using lime powder, sodium metabisulphite, natural preservative (ginggihiang leaf) and control is  6.85, 6.40, and 5.90 respectively. 
(The Influence of Reflux Ratio on Isolation of Alpha-Pinene by Fractional Distillation) Moestafa, Achmad
Warta Industri Hasil Pertanian Vol 5, No 02 (1988)
Publisher : Balai Besar Industri Agro

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Abstract

Alpha pinena is the main component of turpentine oil. This compound is very important since its derivates are used in various indutsries. It may be transformed into borneol, iso-borneol, citronellol and geraniol through an acid reaction which are used in parfumery or it mey be oxidised to pinic and pinonic acid which are used in polymer industry. The isolation of a-pinena from turpentine oil has long been know for centuries, unfortunately no one has discussed it in detail. The aim of this experiments is to find out a suitable condition during the isolation especially the value of reflux ratio if a fractional distillation process is undertaken. By using an Oldershaw type fractional column equipped with five perforated plates it was found that 1:3 ratio was the optimum condition. Not less than 80% of a-pinena with 96% purity had been isolated by this method from a commercial turpentine oil.
( The development of a Non Dsctructive Electrical Technique to Assess Banana Quality) Susanto, Eko
Warta Industri Hasil Pertanian Vol 5, No 02 (1988)
Publisher : Balai Besar Industri Agro

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Abstract

The variation of the dielectric properties of bananas was applied for measuring their quality. The loss tangent was express the degree of banana maturity. Other quality factors measured were sugar and moisture content, pH, pulp to peel ratio and texture. Destructive and non destructive methods were studied to investigate the realtionship between them. The non destructive method was performed by inserting two blades into the banana. Quantitative and quallitative changes of banana were measured with approximately linear correlation with the loss tangent as measured with a universal bridge. The analysis showed that the loss tangent of the banana decreased during the maturation period. The best correlation between sugar content and the loss tangent existed with a linear correlation of 0.93. 
(Aloe vera as a raw Material for Industry) Wahyu Suryowidodo, C
Warta Industri Hasil Pertanian Vol 5, No 02 (1988)
Publisher : Balai Besar Industri Agro

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Abstract

Aloe vera is a kind of succulent plant. It is a member of the Lily family and can be used as a raw material for industries. This article described the components of the aloe gel, its physical and chemical properties, the use of the gel for human health, cosmetic, food and beverage industries.
(Oxidation of VItamin A. Factors Affecting the Rate of Autoxidation of Vitamin A.) Slamet Pardijanto, Muhammad
Warta Industri Hasil Pertanian Vol 5, No 02 (1988)
Publisher : Balai Besar Industri Agro

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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”) G. Pohan, H
Warta Industri Hasil Pertanian Vol 5, No 02 (1988)
Publisher : Balai Besar Industri Agro

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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.
( A Study on Preventing the Fermentation During The Collection of Palm Sap As A Raw Material For Palm Sugar) Sardjono -; M A. Dachlan
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.v5i02.2251

Abstract

A study on preventing the fermentation during the collection of palm sap has been done. The solution of 0.1% sodium metabisulphite, lime powder and ginggihiang leaf (Leea aequata Linn.) were used as preservatives. The bamboo and paralon tubes were used for collecting the sap. The result showed that the preservative was absolutely needed for preventing the fermentation during the sap collection. The average of pH value of sap using lime powder, sodium metabisulphite, natural preservative (ginggihiang leaf) and control is  6.85, 6.40, and 5.90 respectively. 
(The Influence of Reflux Ratio on Isolation of Alpha-Pinene by Fractional Distillation) Achmad Moestafa
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.v5i02.2252

Abstract

Alpha pinena is the main component of turpentine oil. This compound is very important since its derivates are used in various indutsries. It may be transformed into borneol, iso-borneol, citronellol and geraniol through an acid reaction which are used in parfumery or it mey be oxidised to pinic and pinonic acid which are used in polymer industry. The isolation of a-pinena from turpentine oil has long been know for centuries, unfortunately no one has discussed it in detail. The aim of this experiments is to find out a suitable condition during the isolation especially the value of reflux ratio if a fractional distillation process is undertaken. By using an Oldershaw type fractional column equipped with five perforated plates it was found that 1:3 ratio was the optimum condition. Not less than 80% of a-pinena with 96% purity had been isolated by this method from a commercial turpentine oil.
( The development of a Non Dsctructive Electrical Technique to Assess Banana Quality) Eko Susanto
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.v5i02.2248

Abstract

The variation of the dielectric properties of bananas was applied for measuring their quality. The loss tangent was express the degree of banana maturity. Other quality factors measured were sugar and moisture content, pH, pulp to peel ratio and texture. Destructive and non destructive methods were studied to investigate the realtionship between them. The non destructive method was performed by inserting two blades into the banana. Quantitative and quallitative changes of banana were measured with approximately linear correlation with the loss tangent as measured with a universal bridge. The analysis showed that the loss tangent of the banana decreased during the maturation period. The best correlation between sugar content and the loss tangent existed with a linear correlation of 0.93. 
(Aloe vera as a raw Material for Industry) Wahyu Suryowidodo, C
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.v5i02.2253

Abstract

Aloe vera is a kind of succulent plant. It is a member of the Lily family and can be used as a raw material for industries. This article described the components of the aloe gel, its physical and chemical properties, the use of the gel for human health, cosmetic, food and beverage industries.

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