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All Journal PAWIYATAN Pembangunan Pedesaan Jurnal Teknologi Pertanian Proceeding Seminar LPPM UMP Tahun 2014 Agrin : Jurnal Penelitian Pertanian Jurnal Teknologi Hasil Pertanian Pawiyatan
Tri Yanto
LPPM - Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Social Sciences Other

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Journal : Jurnal Teknologi Pertanian

 1 
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)..
Jatropha Oil Utilization as Basic Material of Grease Lubricant Yanto, Tri; Septiana, Aisyah Tri
Jurnal Teknologi Pertanian Vol 13, No 1 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Grease is a kind of lubricant having form of semi solid to solid. It is made of three basic components: base oil, thickening agents and additives. Jatropha oil has a potential roles as a grease lubricant base oil. This research aimed to study the differences of basic material compositions towards the grease qualities, to study the thickening agent which had the most suitable for grease production and to determine the best treatment combination of grease formulation using jatropha oil. The research used an experimental method. The tested factors were types of oil consists and thickening agent consists. Physicochemical variables observed were: dropping point, pH, texture and corrosion resistance. The result of the research showed that the differences of basic material compositions gave the influence to the grease dropping point characteristics. The addition of castor oil 15% could decrease the grease dropping point (from 101.33 oC to 99.08 oC) while the addition of mineral oil lubricant 15% could increase the grease dropping point (101.33 oC to 112.58 oC). The thickening agent which had the most suitable for grease production using jatropha oil was LiOH 3.5% + Al(OH)3 0.5% produced 128.83 oC of dropping point. The best formulation based on zero-one test method obtained at treatment of M3P6, i.e. the grease which has basic materials composition of jatropha oil + mineral oil lubricant 15% and thickening agent of LiOH 0.5% + Al(OH)3 0.5%. That formulation had the characteristic 138 oC of dropping point, pH 7.5, 4.63 mm/dt of texture (NLGI grade of 3) and corrosion resistance included in group 1b (dark orange). Keywords: grease, jatropha oil, castor oil
The Effect Of Antioxidants Addition On The Characteristics Of Palm Oil Base Food Grade Grease Yanto, Tri; Naufalin, Rifda; erminawati, Erminawati
Jurnal Teknologi Pertanian Vol 14, No 1 (2013)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Palm oil has been reported in many studies to be  potential as main ingredient for food grade grease base oil, but it  has  lower oxidative stability as compared to mineral oil. The addition of antioxidants can delay the oxidation reaction on food grade grease. This research aimed to study the effect of different type of antioxidant (TBHQ, BHT, combination of TBHQ and BHT) and different concentration of antioxidant (0, 0.1, 0.2, 0.3, 0.4, and 0.5%) on food grade grease characteristics. Several physychochemical variables such asoxidative defect test, melting point, pH and texture were observed. The results showed that different antioxidant  caused the differences on melting points; and different  antioxidant concentrations caused the differences on melting points and textures. According to zero-one analysis, the best performance was obtained from food grade grease formulated with combination of tert-butyl hydroquinoneand butylated hydroxytolueneantioxidant at 0.3% concentration. This food grade grease had specific characteristics as follow: 1a level of oxidative resistance; 125 °C of melting point; 7 of pH and 5.8 mm/s (NLGI 2) of texture. Keywords: food grade grease, palm oil, tert-butyl hydroquinone, butylated hydroxytoluene
Co-Authors A.A. Ketut Agung Cahyawan W Aisyah Tri Septiana Anna Sulistyaningrum Anny Hartati Ika Puspitasari Karseno . Kusmantoro Edy S Purnamasari, Maria M. D. Rifda Naufalin Swastika, Nila