PENGARUH JENIS KAPANG DAN PENAMBAHAN Lactobacillus plantarum KIK TERHADAP MUTU SUFU

Sufu is a traditional Chinese fermented soybean curd (tofu) resembling a soft creamy cheese-type product. It is made by fungal solid-state fermentation of tofu followed by aging in saturated brine solution. The aims of the research were to obtain the best indigenous mold strain for sufu fermentation and to produce the low salt sufu by applying Lactobacillus plantarum kik during aging. Four indigenous mold strains were used i.e Rhizopus oligosporus, R. oryzae, Mucor hiemalis and Actinomucor elegans. To produce the low salt sufu, the salt concentrations applied were varied in the range of 6% - 12% and by combination of 3% (v/v) L. plantarum kik. The results showed that the fermentation time of pizi was influenced by the mold species. Further sensory evaluation (Balance Incomplete Block Rating Design) on the hedonic rating of sufu revealed that aging in 9% brine and application of 3% (v/v) L. plantarum kik produced the most preferred sufu by the panelists. Combination of L. plantarum kik and pasteurization of sufu could maintain the quality for three weeks. Keywords: pizi, sufu, fungal, Lactobacillus plantarum ki

THE ABILITY OF Lactobacillus plantarum BSL IN REDUCING THE TISSUE DAMAGE OF LIVER AND SPLEEN IN RATS INFECTED BY Listeria monocytogenes ATCC 7644

Lactobacillus plantarum BSL, previously isolated from Indonesian sauerkraut. In this study, we investigated the ability of L. plantarum BSL in reducing the tissue damage of liver and spleen in rats infected by Listeria monocytogenes ATCC 7644. Treatment group of rats received 0.5 mL culture suspension (109 CFU/mL) of L. plantarum BSL and control group received 0.5 mL of 0.85% w/v NaCl daily for nine days of experiment. Both groups were infected at 3rd day with 0.5 mL of suspension of L. monocytogenes (109CFU/mL). At the 2nd (before infection), 5th, 7th, and 9th day (after infection), the rats were sacrificed and then, liver and spleen were assessed for histopathological. Our study revealed that the administration of L. plantarum BSL could be able to reduce the liver and spleen damage of the experimental rats

Phenotypic and genotypic identification of lactic acid bacteria isolated from spontaneous fermentation of unripe var. agung semeru banana (Musa paradisiaca formatypica)

Lactic acid bacteria (LAB) can be found on food products such as milk and meat products, cerealia, cassava, fruits or vegetable products. The objectives of this research were to identify phenotypic and genotypic of lactic acid bacteria isolated from spontaneous fermentation of unripe var agung semeru banana (Musa paradisiaca formatypica). Phenotypic identification was based on general morphology, physiological test, API and Biolog system. Genotypic identification used polymerase chain reaction (PCR) method and analyses of 16S rRNA sequence. The result showed that two groups of LAB (FSnh 1 and FSnh A isolate) can use glicerol, D-ribose, D- xylose, D-glucose, D-fructose, D-mannose, methyl α D-gluco pyranoside, N-acetyl glucosamine, esculin ferric citrate, salicin, D-celiobiose, D-saccharose, gentibiose and potassium gluconate as carbon source. Beside that FSnh 1 isolate used D-galactose, L-sorbose, L-rhamnose, and amygdalin, while FSnh A isolate used metil αD- glukopiranosa, arbutin, D-maltose, D-lactose, D-trehalose, D-turanose, and potassium 5-ketogluconate as carbon source. The genotypic identification showed that Lactobacillus sp associated with the spontaneous fermentation of var agung semeru banana were identified as Lactobacillus salivarus and Lactobacillus fructivorans

Komposisi Kimia dan Kristalinitas Tepung Pisang Termodifikasi secara Fermentasi Spontan dan Siklus Pemanasan Bertekanan-Pendinginan

Studies on the chemical composition and crystallinity of the native banana flour and modified banana flour were carried out on “agung var semeru” banana (Musa paradisiaca formatypica). Native banana flour was produced by drying the banana slice, ground and passed through a 80 mesh screen. Modified banana flour were produced by spontaneous fermentation (room temperature, 24 h)and one or two cycles of  autoclaving (121 oC, 15 min) followed by cooling (4 oC, 24 h) of the slices before drying process. The results showed that spontaneous fermentation of banana slices increased amylose content. Two cycles of autoclaving-cooling significantly increased resistant starch content of banana flour (39.13 – 42.68% db) than the one cycle (29.34 – 35.93% db). Retrogradation process decreased the crystallinity from 18.74% -20.08% to 6.98% - 9.52%. X-ray diffraction showed that the starch granule was type C granule as a mixtureof A and B polymorphs.ABSTRAKKajian tentang komposisi kimia dan kristalinitas tepung pisang alami dan tepung pisang termodifikasi dilakukan pada pisang var agung semeru (Musa paradisiaca formatypica). Tepung pisang alami (kontrol) dihasilkan dengan mengeringkan irisan pisang, menghancurkan dan mengayak tepung dengan ayakan 80 mesh. Tepung pisang modifikasi dihasilkan dengan cara irisan pisang diberi perlakuan fermentasi spontan (suhu kamar, 24 jam) dilanjutkan dengan satu atau dua siklus pemanasan bertekanan (121 oC, 15 menit) yang diikuti dengan pendinginan (4 oC, 24 jam) sebelum dilakukan proses pengeringan. Hasil penelitian menunjukkan bahwa fermentasi spontan mampu meningkatkan kadar amilosa. Dua siklus pemanasan bertekanan-pendinginan meningkatkan pati resisten (RS) tepung pisang dengan nyata (39,13 – 42,68% bk) dibandingkan dengan yang satu siklus (29,34 – 35,93% bk). Proses pemanasan bertekananpendinginan menurunkan kristalinitas tepung pisang dari 18,74-20,08% menjadi 6,98-9,52%. Difraksi sinar X menunjukkan granula pati pisang adalah granula tipe C yang merupakan campuran dari granula tipe A dan tipe B

Mode of Action Temu Kunci (Kaempferia pandurata) Essential Oil on E. coli K1.1 Cell Determined by Leakage of Material Cell and Salt Tolerance Assays

The essential oil of Kaempferia pandurata consist of terpen and oxygenated terpen that exhibits broad-spectrum antimicrobial activity. It’s mode of action against the gram-negative bacterium E. coli K1.1 has been investigated using a range of treatments. The mode action of the essential oil were analyzed by it’s ability to leakage E. coli K1.1 cell, to change permeability of the cell, and to alter salt tolerance of the cell. Ion leakage from the cell were analyzed by atomic absorption spectrophotometer. Salt tolerance assays was conducted by investigating the ability of E. coli K1.1 treated with temu kunci essential oil to grow on NA supplemented with NaCl. Protein and acid nucleic leakage were analyzed by UV spectrophotometer. There were inorganic compound leakage (potassium, calcium ion) and organic compound leakage (nucleic acid, protein) from cytoplasmic membrane, after exposing this organism to essential oil of Kaempferia pandurata. The more concentration of oil added, the more leakage was observed due to the loss of absorbing material such as nucleic acid (260 nm) and protein (280 nm), the loss of potassium and calcium ion, and loss of the salt tolerance of E. coli K1.1. Key words: essential oil, E. coli K1.1, leakage, salt tolerance assa

Kajian Peningkatan Pati Resisten yang Terkandung dalam Bahan Pangan Sebagai Sumber Prebiotik

Prebiotics are food ingredients that selectively stimulate the growth of probiotic bacteria in the colon. Resistant starch (RS) is the starch that can not be digested by digestive enzymes and resistant to gastric acid so it can reach the colon to be fermented by probiotic bacteria. There are treatments to increase the content of RS such as: autoclaving-cooling cycling, combination of lintnerized with autoclaving-cooling, and combination of debranching pullulanase with autoclaving-cooling. The results of techno-economical study showed that the combination of fermentation followed by autoclaving-cooling can be used as an alternative technique to increase the content of resistant starch in food more effectively and efficiently

Survivability and release process of Lactobacillus plantarum SU-LS36 encapsulated with native and modified taro starch under simulated digestive conditions

This research aimed to evaluate the viability, survivability, and release process of the encapsulated Lactobacillus plantarum SU-LS36 in the simulated gastric juice (SGJ), simulated intestinal juice (SIJ), and simulated colon juice (SCJ). We tested four types of encapsulations: native taro starch (NTS), modified taro starch (MTS) by heat moisture treatment (HMT), autoclaving-cooling-2 cycles (AC-2C), and maltodextrin (commercial encapsulant). We found that L. plantarum SU-LS36 with AC-2C-modified taro starch (MTS) showed the highest viability in SGJ (6.95 log CFU/g), SIJ (7.09 log CFU/g), and SCJ (7.85 log CFU/g) after incubation up to 4 h. AC-2C MTS dissolved or released more rapidly from its encapsulant material in the colon in SCJ than in NTS, HMT MTS, and maltodextrin. The longest time release of L. plantarum SU-LS36 encapsulated in AC-2C MTS was 3 h in SIJ conditions, 2 h in SGJ, and the fastest (1 h) in SCJ. The encapsulated L. plantarum SU-LS36 was released through a dissolution process (SGJ and SCJ) and by pancreatin activity (SIJ). Conclusively, AC-2C MTS could maintain the viability of L. plantarum SU-LS36 cells to the colon at 6.04 log CFU/g and fulfilled the minimum requirement of biovalue (MBV) probiotics set forth by the US FDA (6-7 log CFU/g)

Sanitasi Dalam Industri Pangan

--.95 hal.;ill.;20 c

Penangan Limbah Industri Pangan

Yogyakarta184 hlm.; ilus.; 21 cm

Sanitasi industri pangan

iii+97hlm.;23c