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Jurnal Teknologi Dan Industri Pangan

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Published by Institut Pertanian Bogor

ISSN : 19797788 EISSN : 2087751X DOI : 10.6066

Core Subject : Agriculture, Engineering,

Agriculture, Biological Sciences & Forestry Industrial & Manufacturing Engineering

Arjuna Subject : -

Articles 635 Documents

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KARAKTERISTIK MUTU FISIK TEKWAN KERING DENGAN RASIO IKAN BERBEDA Muhammad Irfan Febriansyah; Sukarno Sukarno; Dedi Fardiaz
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 1 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Dried tekwan is a traditional restructured-fish product of South Sumatera processed by convectional drying. The study aimed to determine the effect of fish and tapioka ratio and tekwan’s length on the physical quality of the dried tekwan. The physical quality of dried tekwan made with different ratio of fish and tapioca ratio (1:1, 1.5:1 and 2:1 (w:w)) and length 1, 2, and 3 cm were investigated. The physical quality evaluated were the degree of whiteness, rehydration ratio, water holding capacity (WHC) and microstucture. The drying profile and proximate composition were also evaluated. There was no difference in the rate of drying of different fish:tapioca ratio as well a different tekwan length when free water evaporation was progressing. However, difference in drying rate was observed when the water content reached the equilibrium. Ratio 2:1 of fish and tapioca and 2 cm length of tekwan was found the to be best treatment and resulting in dried tekwan with moisture content 10.22%, ash 1.9%, protein 27.9%, fat 1.38%, carbohydrate 58.6%, whiteness 45.96% and expressible moisture content 2.06%. Microstructure of dried tekwan with 2:1 ratio showed more compact structure and slight damage than 1.5:1 ratio. However, dried tekwan with 2:1 ratio still had lower rehydration properties than other treatment.

PENGARUH PENAMBAHAN LILIN LEBAH DAN NANOPARTIKEL SENG OKSIDA TERHADAP SIFAT FISIK DAN MEKANIS FILM BERBASIS KITOSAN Novan Nandiwilastio; Tien R. Muchtadi; Nugraha E. Suyatma; Sri Yuliani
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 2 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Chitosan-based films showed good gel formation capability and gas permeability (CO2 and O2). However, the high permeability of water vapor limits the application of chitosan as a single coating material. Additionally, single chitosan film was also brittle, so the addition of lipid and metal nanoparticles were chosen to solve this problem. This research aimed to determine the effect of the addition of beeswax emulsion and zinc oxide nanoparticles (ZnO-NPs) on the physical and mechanical properties of chitosan based films. The film was prepared by dissolving ZnO-NPs (0, 1 and 2% by weight of chitosan) into 100 mL of distilled water followed by the addition 1 g of chitosan and or, addition of beeswax emulsion (0 and 5% by the volume of solution). The result showed that the addition of beeswax emulsion ZnO-NPs into chitosan based film significantly decreased WVTR value from 24.03 to 10.38 g/m2 hours and the tensile strength value from 8.30 to 6.92 Mpa. The addition of beeswax emulsion and ZnO-NPs also changed the physical properties of chitosan-based film significantly; in terms appearance, color and thickness. Mean-while, the film elongation percentage changed significantly in the range of 30.36 to 50.09 % when ZnO-NPs was added into chitosan-based film solution. Overall, the addition of beeswax and ZnO-NPs showed improvement of the physical and mechanical properties of chitosan-based films so that better packaging of fresh food products can be developed.

PENGARUH STARTER BAKTERI ASAM LAKTAT PROBIOTIK TERHADAP PERUBAHAN KIMIAWI DAN MIKROBIOLOGIS RUSIP Pebry Aisyah Putri Batubara; Desniar Desniar; Iriani Setyaningsih
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 1 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Rusip is one of the fish fermentation products. Traditional rusip made by Bangka Belitung community do not have a specific standard which leads to the high variety ofquality. One of the efforts to improve the quality of rusip is the addition of lactic acid bacteria (LAB) as a starter culture. This research aims to study the effect of the addition of starter culture combinations on the chemical and microbiological changes of the rusip and toobtain the best combination of LAB starters in rusip fermentation. This research used anchovy fish (Stolephorus sp) and 5% ofLAB starter combination consisting of Lactobacillus plantarum SK(5) and L. plantarum NS(5), L. plantarum NS(5) and L. plantarum NS(9) and L. plantarum NS(9) and L. plantarum SK(5) 5%. In addition, 5% ofsalt (w/w) and 5% of palm sugar (w/w) were added. The fermenta-tions were conducted for 8 days. The research were conducted in three stages: 1) starter culture prepara-tion; 2) raw material (fish) preparation; and 3) application of starter culture during rusip fermentation. The results showed that raw materialscontained a total microbe of 3.0x104 CFU/g, non detectable levels ofLAB, 6.54of pH and 20.40 mg N/100g of total volatile bases (TVB). After fermentation, the rusip contained total LAB of7.64-9.24log CFU/g, 0.86-3.98% of total lactic acid,4.22-6.36 of pH, 0.32-1.39 of free amino acid and 5.34-5.44% of salt.The best rusip was produced bya combination of L. plantarum SK(5) and L. plantarum NS(5) and con-tained12.36 g/100g of total amino acid.

EFEK PENAMBAHAN PROPILEN GLIKOL ALGINAT DAN ISOLAT PROTEIN KEDELAI TERHADAP MUTU FISIK DAN MUTU PENERIMAAN MI JAGUNG Fahim Muhammad Taqi; Subarna Subarna; Tjahja Muhandri; Rarasari Clorinita Utomo
Jurnal Teknologi dan Industri Pangan Vol. 29 No. 2 (2018): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Corn noodle is a potential product to be developed in non-wheat producing countries; however the texture is generally less preferred than wheat noodles. The addition of propylene glycol alginate (PGA) and soy protein isolate (SPI) to the dough was expected to decrease the hardness of corn noodles and in-crease its protein content. This study aimed to evaluate the effect of PGA (0, 0.25, 0.5, 0.75, and 1%) and SPI (0, 5, and 10%) addition on corn noodle rheology. Five parameters were analyzed i.e. cooking loss, elongation, hardness, cohesiveness and stickiness. A hedonic rating test was also performed to evaluate the corn noodle organoleptic quality. The results showed that the addition of PGA decreased the cooking loss and hardness, but increased the elongation and cohessiveness. While the addition of SPI decreased the cooking loss and cohessiveness (at PGA level 0 and 0.25%), it increased hardness and elongation (at PGA level 0%). Based on the hedonic test, corn noodle with 0.5% PGA without the addition of SPI was the most preferred formula.

LABEL TIME-TEMPERATURE INDICATOR MENGGUNAKAN CAMPURAN MINYAK NABATI UNTUK MEMONITOR MUTU MIKROBIOLOGI SUSU PASTEURISASI Anis Khairunnisa; Nugraha Edhi Suyatma; Dede Robiatul Adawiyah
Jurnal Teknologi dan Industri Pangan Vol. 29 No. 2 (2018): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Pasteurized milk (PM) is a perishable product requiring storage at cold temperatures to maintain its shelf life. However, the temperature fluctuations during transportation, handling, and storage could affect the number of microbial counts of the product. A time-temperature indicator (TTI) can be used to monitor product conditions in real time, so consumers know the condition of the product during transportation and storage. This study aims to determine the ability of a mixed vegetable oil (VOB) as a TTI indicator and evaluate the validity of TTI as an indicator of PM microbiological degradation. The VOB was produced from a mixture of palm oil (PO), canola oil (CA), and olive oil (OV) at ratios of 50:40:10 (C1), 50:25:25 (C2), and 50:10:40% (v/v) (C3), with the addition of 0.25% (m/v) of red dye (CI 16255). The VOBs were tested its for diffusion length, diffusion kinetics, and the accuracy of the prediction model of each indicator at isothermal temperatures. The VOB indicator can be applied to monitor the total growth of microbes in PM. The value of the activation energy (Ea) of each indicator was 34.289 (C1); 35,294 (C2) and 40,646 kJ/mol (C3), while the Ea value of the microbial spoilage in PM was 58,105 kJ/mol. The difference between the Ea PM value and each indicator was less than 25 kJ/mol. Indicating that the accuracy of the prediction model was good. At storage temperature of 29°C, the critical limit for PM spoilage occurs after 24 hours of storage which correlated with the diffusion length indicator of 6.50 (C1), 6.25 (C2), and 5.5 cm (C3). Overall, the indicators observed can be used to monitor the microbiological spoilage of PM, so that the actual quality of PM before consumption can be estimated.

PENGARUH BEBERAPA BAHAN BAKU TERHADAP KARAKTERISTIK FISIKOKIMIA DAN SENSORI RENGGINANG SINGKONG (Manihot utilissima Pohl) Hadi Munarko; Sugiyono Sugiyono
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 1 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Cassava rengginang is a traditional food having similar shape to rice rengginang but is made from cassava. The objective of this research was to know the effects of raw material on the physical and senso-ry characteristics of cassava rengginang. This research was divided into two steps. The first step was raw material preparation i.e. grated cassava, cassava flour, and a mixture of tapioca and “asian” flour 3:1 (w:w). The second step was the production of the cassava rengginang from the three raw materials. The results showed that the raw material affected the physical characteristics of cassava rengginang. Renggi-nang made from grated cassava had the lowest expansion ratio and crispness, i.e. 142.94% and 474.12 gf respectively. Rengginang made from cassava flour had higher expansion ratio and crispness (191.39% and 343.81 gf respectively), the lowest lightness (L= 71.4) and the highest brownish color (a=5.18; b=27.49). Rengginang from a mixture of tapioca and “asian” flour (3:1) had the highest crispness (244.63 gf), expansion ratio (223.95%), lightness (L=79.62), and white color (a=0.63 and b= 16.3). The differences on the physical characteristics of rengginang did not affect the sensory acceptance of the product for all attributes. Fried rengginang made from a mixture of tapioca and “asian” flour was chosen for proximate analysis because it had the highest expansion ratio, crispness and lightness among the other formula although it was not significantly different at 95% level on panelist acceptance.

PROFIL SENYAWA POLAR TIGA JENIS MINYAK GORENG SELAMA PENGGORENGAN TAHU DAN TEMPE Titri Siratantri Mastuti; Dedi Fardiaz; Didah Nur Faridah
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 1 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

The quality of repeatedly used frying oil can be seen from its total polar material (TPM) content. This study aims to determine the influence of different types of oil with different degrees of unsaturation (coco-nut, palm, soybean oil) and foodstuffs with different characteristics (tofu and tempe) to the formation of the polar compounds in repeatedly used frying oil, based on the content of TPM, FFA, BI, FTIR and UV-Vis spectra. Chemical characterization of materials used was done in the first research stage. The second stage was the analysis of the polar compounds of the oil which was used for 3 hours/day for a dried of 15 hours. The results showed that the type of oil and food type affected the levels of TPM with increasing time of frying. The highest level of TPM 19.41±0.13% obtained from combination soybean frying oil-tempeh (15 hours). The FTIR spectrum of the polar fraction from the used frying oil showed a large absorption in area 3600-3200 cm-1 wavelength in which hydroxyl groups indicate the polarity of the frying oil. The rate of in-crease of FFA in all combinations of oil type-tempeh was faster than combination oil type-tofu. Coconut oil-tofu has a slower rate for FFA and browning index. The carbonyl compound in frying oil was showed from peak spectrum absorption at 420 nm.

KARAKTERISTIK SIFAT PREBIOTIK TEPUNG DALUGA HASIL MODIFIKASI HEAT MOISTURE TREATMENT Nestri Purnamasari; Didah Nur Faridah; Betty Sri Laksmi Jenie
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 1 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Daluga (Cyrtosperma merkusii. (Hassk.) Schott) is one of tubers originating from Siau Island, Manado, North Sulawesi. The resistant starch of daluga can be utilized as a potential source of prebiotic. However, naturally daluga has low resistant starch content and a modification is necessary for improving its content. The aim of the study was to examine the effect of heat moisture treatment (HMT) on the resistant starch content and prebiotic properties of modified daluga flour. The HMT modification was carried out at 121°C for 60 min in an autoclave, and the modified flour was then compared with the untreated native flour (TD). The results showed that autoclaved TD-HMT flour had 8.81% higher resistant starch content as compared to that of TD. The increment also affected the prebiotic characteristics of the modified flour. The TD-HMT showed resistant to gastric acid up to 92%, augmentations of prebiotic activity, index and effect, as well as L. plantarum BSL growth improvement up to 3 log CFU/mL. The gastric acid resistant autoclaved TD-HMT is able to stimulate probiotic LAB growth, confirming its prebiotic potential for acid bacteria fermentation.

PEMURNIAN DAN KARAKTERISASI PEDIOSIN YANG DIPRODUKSI OLEH Pediococcus pentosaceus 2A2 Ni Wayan Triwulandhari; Betty S. L. Jenie; Hanifah N. Lioe; Irma Isnafia Arief
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 2 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Pediocin production by Pediococcus pentosaceus 2A2 was done in 30% molasses based medium at 37°C for 24 hours. The culture was then centrifuged to separate the cells and yield cell-free supernatant (CFS). Purification of the CFS was carried out by stepwise ammonium sulfate precipitation to achieve a 90% concentrate, followed by dialysis using membrane with a molecular weight cut off 2.0 kDa resulting in pediocin crude extract (PCE). The PCE was purified by cation exchange chromatography using SP Se-phadex C-25 and eluted with sodium acetat buffer at pH of 5.5; 6.0; 6.5; and 7.0 successively resulting in 4 fractions (F1, F2, F3, F4). Each purification step resulted in the increase in antimicrobial activity against Listeria monocytogenes ATCC 7644. The PCE had specific antimicrobial activity up to 5 fold higher than the CFS. F4 fraction, which showed the largest inhibition zone among the other fractions, had a very high specific activity up to 435 fold higher than the CFS. The SDS-PAGE analysis suggested that the molecular weight of F4 was approximately 5.9 kDa. The minimum inhibitory concentration (MIC) of F4 to inhibit 1 log (90%) of L. monocytogenes ATCC 7644 was 143 ppm. The inhibitory phenomenon observed under scanning electron microscope (SEM) showed that L. monocytogenes’s cells exposed to F4 experience morphological changes such as cells shrinkage.

AKTIVITAS ANTIOKSIDAN DAN PENGHAMBATAN α-GLUKOSIDASE OLEH EKSTRAK ETANOL BAKTERI ASAM LAKTAT INDIGENUS Eko Farida; Betty Sri Laksmi Jenie; Lilis Nuraida; Puspo Edi Giriwono
Jurnal Teknologi dan Industri Pangan Vol. 30 No. 1 (2019): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Lactic acid bacteria (LAB) are one of Indonesia's biodiversity which can be beneficial for food and health purposes. Some of LAB are potential probiotics with specific functional properties, such as antidiabetes. This study evaluated the effect of ethanol extracts of twelve indigenous LAB in inhibiting α-glucosidase enzyme and their antioxidant activities. Assay for the α-glucosidase inhibition was performed on LAB ethanol extract using spectrophotometric method at λ=410 nm, while the antioxidant activity was measured using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method at λ=517 nm. The results showed that α-glucosidase inhibition was significantly different between the isolates (P<0.01). Lactobacillus fermentum S21209 had the highest α-glucosidase inhibition activity, which was significantly different from Lactobacillus plantarum MB427, Lactobacillus plantarum Pi28a, Lactobacillus delbrueckii W24802 and Lactobacillus plantarum 2 W22409. Evaluation of the antioxidant activity also showed significant difference between the isolates (P<0.01). Lactobacillus plantarum BSL had the highest antioxidant activity (92.81±1.36%), which was not significantly different from vitamin C as a control. This preliminary study reported that twelve indigenous LAB could be used as potential antidiabetic probiotics, although the responsible compounds are not known.

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