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Jurnal Dinamika Penelitian Industri Vol. 25, No. 2, 2014

viii

JURNAL DINAMIKA PENELITIAN INDUSTRI(JOURNAL OF THE DYNAMICS OF INDUSTRIAL RESEARCH )

ISSN 2088-8996 Vol. 25, No. 2, 2014

ABSTRACT

THE EFFECT OF STEAM ING TIME ON THE SENSORIES QUALITY OF THE EIGHT HOUR

STEAMED CAKES

Sri Agustini, Gatot Priyanto, Basuni Hamzah, Budi Santoso dan Rindit PambayunProgram Doktor Bidang Kajian Utama Teknologi Industri Pertanian Fakultas Pertanian

Universitas Sriwijayae-mail : [email protected]

This research intended to reveal the role of steaming time in developping the sensories attribute of kuedelapan jam and to unravel the reason underlying the local wisdom in cooking traditional cakes. Thetreatment was steaming time consist of 2 , 4, 6, and 8 hours. Sensory evaluation assessed by 30

panelist. Laboratory test for browning index also conducted to represent the stages of Maillard reaction.Sensory evaluation showed that the steaming time influenced the moistness, solidity, texture, color,appearance, taste, aroma, flavor and over all acceptance of the cake significantly. Panelist gave thehighest sensories quality for 8 hours steaming. The 8 hour steaming showed that brown colored

pigment formed adequate enough to colour the cake perfectly, and the volatile compound have beenable to give distinctive flavor and aroma completely. The sensories quality of KDJ which was steamedfro 8 hours did not significantly differ with that steamed for 6 hours

Keywords : kue delapan jam, steaming time, sensory evaluation.

CHITOSAN NANO PARTICLE SYNTHESIS AND IT’S EFFECT ON I NHIBITION OF PINEAPLL E

JUICE SPOILAGE BACTERIA

Husniati dan Eva Oktarina

Balai Riset dan Standardisasi Industri Bandar Lampunge-mail: [email protected]

Chitosan nano particles synthesized by crosslinking reaction between the ionic gelation of chitosan

with TPP (tri-polyphosphate) using Tween 80 surfactant. The reaction takes place through continuousstirring with a magnetic stirring at room temperature for 2 hours. Based on the obtained nano size

particles PSA ranged between 215.9 and 272.9 nm with a chemical composition containing theelements C, H, O, N, and some minerals were observed by SEM-EDS. Bioactivity test results showedthe concentration of 0.01% b/v has a maximum resistance spectrum. Toxicity tests on white mice withLD50 value compound chitosan nano particles contain no toxic poison.

Keywords : anti bacterial, bioactivity test, ionic gelation, LD50 , chitosan nano particles.

mailto:[email protected]:[email protected]:[email protected]

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ix

JURNAL DINAMIKA PENELITIAN INDUSTRI

(JOURNAL OF THE DYNAMICS OF INDUSTRIAL RESEARCH )

ISSN 2088-8996 Vol. 25, No. 2, 2014

ABSTRACT

THE EFFECT OF pH, MICROALGAE CHLORELL A VULGARIS ISOLATE CONCENTRATION, AND

OBSERVATION PERIOD ON PROCESSING CRUMB RUBBER WASTE WATER POLLUTANT

LEVEL

Chasri Nurhayati1)

, Basuni Hamzah2)

, Rindit Pambayun2)

Balai Riset dan Standardisasi Industri Palembang

1);

Pasca Sarjana Teknologi Pertanian Fakultas Pertanian Universitas Sriwijaya2,3)

e-mail : [email protected]

The purpose of this study was to determine the influence of microalgae concentration, pH and time ofobservation of the levels of pH, biochemical oxygen demand (BOD), chemical oxygen deman (COD),total suspended solids (TSS), and ammonia on crumb rubber waste water. This study use theCompletely Randomized Design-factorial which consisting of three factors. The first factor is theconcentration of microalgae (K) with K 1=5%, K 2 =10%, K 3=15% and K 4=20%, the second factor is pH

(P) with P 1=pH7, P 2 =pH 8, P 3=pH 9 and the third factor is the time of observation (W) with the standardof 1,2,3,4,5,6,7,8,9,10. The variables that were observed were pH, BOD, COD, TSS, and ammonia.The results showed that the microalgae concentration, pH and time of observation has significant effecton pH, BOD, COD, TSS, and ammonia. Combination treatment of microalgae concentration of 5% anda pH of 7 and time of 5

th observation (K1P1W5) is the best treatment to reduce crumb rubber waste

water according to Government Regulation of South Sumatera Number 8 Year 2012 (Per. Gub.Sum.Sel. 8 Th 2012) and Kep.Men. LH No. 51/Men LH/10/1995 with a pH of 7.72, the BOD of 58.3667mg/L, COD of 108.5700 mg/L, TSS of 3.0300 mg/L, and ammonia of 3.3500 mg/L.

Keywords : crumb rubber waste water, microalgae concentration, pH, quality standards of waste water

BIOREMEDIATION OF CASSAVA WASTE WATER BY IMMOBILIZED BACTERIA

ON MICROBIAL FUEL CELL

Eva OktarinaBalai Riset dan Standardisasi Industri Bandar Lampung


Bioremediation technique have been applied by industrial, as itself or combined with methaneinstallation. This research aim is to explore the ability of immobilized bacteria for liquid cassava wastebioremediation on MFC. Single chamber non membrane MFC installed on laboratories scale. Variationthat used in this research are MFC-immobilized Serratia (MFC 1), MFC-immobilized Pseudomonas(MFC 2), and MFC-immobilized Enterobacter (MFC 3). Waste water parameter that will be observedare pH, cyanide (CN), COD, TSS, NH 3. dan conductivity. Result showed that cyanide removal is 50 -98,49%; COD removal is 23,58 - 31,28%; and NH 3 removal is 40,55 - 98,01%. Voltage (mV) outputsfrom the MFCs are 698, 684 and 665. Immobilized Serratia, Pseudomonas and Enterobacter can be

used as tapioca liquid waste water bioremediation on Microbial Fuel Cell (MFC).

Keywords : b ioremediation, cassava waste water, enterobacter, pseudomonas, serratia

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ISSN 2088-8996 Vol. 25, No. 2, 2014

ABSTRACT

THE EFFECT OF SUGAR ADDITION TO THE QUALITY OF COCONUT WATER VINEGAR

Silfia1) dan Sri Agustini2)

Balai Riset dan Standardisasi Industri Padang1)

; Balai Riset dan Standardisasi Industri Palembang2)


Vinegar is an organic acid compound known as a preservative acids, flavoring and aroma in food.Vinegar can be made from sugar containing substrate which can be obtained from a various ofmaterials such as fruits and coconut water. This research intended to maximize the utilisation ofcoconut water as raw material in making natural vinegar. Coconut water vinegar is a natural productthat is produced from fermentation of coconut water substrate enriched with sugar. Research appliedcompletely randomized design where the sugar addition as treatment consist of 6%, 8%, 10%, 12%,14%. The effect of sugar addition on the quality of coconut water vinegar examined according to SNIrequirement and sensories test for taste and aroma by 20 panelist. The results showed that treatmentof 12% adding sugar gave the best results with a level of acetic acid, pH and sugar concentration

were 8.22%, 3.80, 5.82% respectively. Contamination Pb was not detected, Fe was 0.065 ppm,arsenic was 0.046 ppm. Score for organoleptic test for taste and aroma was 3.59 and 3.78 out of 5respectively.

Keywords : vinegar, coconut water, sugar, pH

THE USE OF WAX FROM RUBBER SEED OIL FOR THE MANUFACTURE

OF BATIK FABRIC

LuftinorBalai Riset dan Standardisasi Industri Palembang


The research aimed to study the use of wax from rubber seed oil and to get the right formula in the process of making batik fabric. Research treatment included two kinds of wax, rubber seed oil and paraffin, with each composition was 3.0 kg, 2.5 kg, 2.0 kg, 1.5 kg, 1.0 kg, 0.5 kg, 0 kg and 0 kg, 0.5 kg,1.0 kg, 1.5 kg, 2.0 kg, 2.5 kg, 3.0 kg. Batik wax with a formula which has been created was attached tothe fabric according to the desired motifs, further staining process and pelorodan. The results showedthat the melting point of the batik wax ranged 48-61°C, 70-90°C for plorodan temperature, motifexcellent value range 2-5, color reflectance 7.443 to 9.125, color fastness to laundering 4-5, colorfastness to rubbing 4-5 and color fastness to sunlight 4-5. Optimal conditions obtained in batik waxformula IV for mori fabric base with wax melting point 55°C, 80°C temperature plorodan, 4 (good) thevalue of perfection motif, 7.443 color reflectance, color fastness to washing, rubbing and sun with avalue from 4 (good) to 4-5 (good). Formula III for silk fabric base, with a melting point of wax 53°C,80°C plorodan temperature, the value of perfection motif 4 (good), color reflectance 8.619, colorfastness to washing, rubbing and sun with a value from 4 (good) to 5 (very good).

Keywords : rubber seeds, batik fabric, wax, plorodan

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xi



ISSN 2088-8996 Vol. 25, No. 2, 2014

ABSTRACT

UTILIZATION OF BRUSHING RUBBER AND SILICA FROM COCONUT COIR AS FILLER

MATERIAL IN RUBBER ROOF TILES COMPOUND PRODUCTION

NuyahBalai Riset dan Standardisasi Industri Palembang


This study aims to determine the effect of brushing rubber and silica from coconut coir as a filler in the production of compound rubber tile, and get the rubber compound formula right and meet therequirements. The type of filler used is brushing rubber and silica filler material from the coconut coirwith ratio variation were formula 1 (brushing rubber: silica = 22: 8), the formula 2 (brushing rubber:silica = 18: 12), the formula 3 (brushing rubber : silica = 15: 15), the formula 4 (brushing rubber: silica =12: 18), the formula 5 (brushing rubber: silica = 8: 22) and the formula 6 (brushing rubber: silica = 4:26). Results showed that the addition of rubber and silica brushing of coconut coir significantly affectthe hardness, tensile strength, elongation at break and ozone resistance. The best formula obtained in

the formula 3 (brushing rubber: silica = 15: 15) with a value of 50 shore A hardness, tensile strength of6.3 MPa, elongation at break of 410% and Ozone resistance No cracks.

Keywords : brushing rubber, silica, rubber roof tiles compound

THE EFFECT OF CARBON B LACK AND BRUSHING RUBBER VARIATION FOR

FLOOR CLEANER RUBBER

Syamsul Bahri dan Bambang SugiyonoBalai Riset dan Standardisasi Industri Palembang

e-mail : [email protected]; [email protected]

Present day, floor cleaner is made from rubber which have high hardness, low scratch resistance, lowscrape resistance and less elastic making it difficult to use on ceramic tiles. This study aims to obtain

exact formula using the fill ratio of Crumb Rubber and Rubber Brushing, thus obtained rubber goodsthat meet the technical standards. Experimental design that used in this experiment was Full RandomDesign with 4 (four) condition and 3 (three) times repetition. The condition are K1 = Carbon Black 20

phr, K2 = Carbon Black 15 phr dan Brushing Rubber 5 phr, K3 = Carbon Black 10 phr dan BrushingRubber 10 phr, K4 = Carbon Black 5 phr dan Brushing Rubber 15 phr. Condition of brushing rubber asa filler affects the characteristics of the rubber compound rubber for hardness, tensile strength,elongation at break and density. The best test result was K1 (Carbon Black 20 phr) with the value oftensile strength 165 Kg/cm

2 , elongation at break 532%, tear resistance 38 Kg/cm

2 and abration

resistance 2,0 mm3 /Kg. Condition K4 (Carbon Black 5 phr dan Brushing Rubber 15 phr) had the best

hardness with value 63 Shore A.

Keyword : rubber, floor cleaner rubber, compound
mailto:[email protected]:[email protected]

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Jdpi 2014