scholarly journals Effect of Storage Duration on Physicochemical and Antibacterial Activities of Sweet Corn-based Synbiotic Yogurt with Honey

2020 ◽  
Vol 3 (2) ◽  
pp. 174
Author(s):  
Musyirna Rahmah Nasution ◽  
Winda Sri Wahyuni
Keyword(s):  
Antibacterial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Sweet Corn ◽  
Ph Value ◽  
Fermented Milk ◽  
Antibacterial Activities ◽  
Quality Standard ◽  
Total Coliform ◽  
Storage Duration

Synbiotic yogurt is fermented milk containing probiotics and prebiotics. The quality of symbiotic yogurt products during cold storage must meet the SNI quality requirements (2981-2009). This study aimed to find the effect of yogurt storage duration on physicochemical properties and antibacterial activity for the best yogurt storage time. In this study, synbiotic yogurt was made from sweet corn, honey, and full cream milk as prebiotics and Lactobacillus acidophilus and Bifidobacterium bifidum as probiotics. The tests carried out include testing total coliform, total lactic acid bacteria, degree of acidity (pH), total titrated acid, organoleptic quality, and antibacterial activity. The tests were carried out on days 0, 5, 10, 15, and 20. The results showed that storage duration affected product quality and antibacterial activity. The best storage duration for yogurt was found to be ten days, where the yogurt stored for ten days found to have a total coliform of 0 APM/g, total lactic acid bacteria of 2.81 x 1012, total lactic acid of 1.684%, pH value of 3.5 and was still preferred and could be accepted by the panelists, based on the organoleptic assessments. The yogurt stored for ten days also gave the largest average inhibition diameter of 21.78 mm with the category 'very strong' against Escherichia coli and 22.13 mm with the classification 'very strong' against Salmonella typhi. The yogurt stored for up to 10 days still met the SNI yogurt quality standard requirements (2981: 2009).

scholarly journals The effects of low-temperature storage on the viability of Lactobacillus casei and the stability of antibacterial activity in green grass jelly synbiotic drinks

2020 ◽  
Vol 21 (8) ◽  
Author(s):  
SAMSUL RIZAL ◽  
Suharyono Suharyono ◽  
Fibra Nuariny ◽  
Julfi Restu Amelia
Keyword(s):  
Antibacterial Activity ◽  
Lactic Acid ◽  
Low Temperature ◽  
Lactic Acid Bacteria ◽  
Lactobacillus Casei ◽  
Pathogenic Bacteria ◽  
Ph Value ◽  
Low Temperature Storage ◽  
The Stability ◽  
Temperature Storage

Abstract. Rizal S, Suharyono, Nurainy F, Amela JR. 2020. The effects of low-temperature storage on the viability of Lactobacillus casei and the stability of antibacterial activity in green grass jelly synbiotic drinks. Biodiversitas 21: 3826-3831. Synbiotic drinks from green grass jelly have shown antibacterial activity against pathogenic bacteria. These are usually stored at low temperatures to maintain their characteristics. The aim of this study was to determine the effect of storage at low temperature of 10°C on the viability of lactic acid bacteria (Lactobacillus casei) and the stability of the antibacterial activity in synbiotic drinks made of green grass jelly. Antibacterial activity of green grass jelly synbiotic drink was conducted against pathogenic bacteria (Staphylococcus aureus, Salmonella sp., Bacillus cereus, and Escherichia coli). The products were stored for 28 days at 10°C temperature. Observations on the antibacterial activity, pH value, total acid, and total lactic acid bacteria were carried out every 7 days. Antibacterial activity was evaluated using agar well diffusion method. The results showed that storage at low temperature (10 ± 2°C) for 28 days decreased the antibacterial activity and pH value but sharply increased total lactic acid bacteria (at 0 to 7 days of storage) in green grass jelly synbiotic drinks. Salmonella sp. showed the highest inhibition caused by the antibacterial agents in green grass jelly synbiotic drinks while the lowest inhibition was found on Staphylococcus aureus. During storage at low temperature, green grass jelly synbiotic drinks had a total of lactic acid bacteria that ranged from 9.51 to 10.10 (Log CFU/mL) or equal to 3.24x109-1.26x1010 CFU/mL; a total of lactic acid that ranged from 0.48% to 0.87%; and pH values that ranged from 3.78 to 4.08.

scholarly journals Influence of lactic acid bacteria, probiotic cultures and pH value in fermented yoghurt drink to sensory quality

2009 ◽  
Vol 57 (5) ◽  
pp. 291-304 ◽  
Author(s):  
Hana Šulcerová ◽  
Radka Burdychová
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Sensory Evaluation ◽  
Ph Value ◽  
Fermented Milk ◽  
Milk Product ◽  
Milk Products ◽  
Texture Intensity ◽  
Analysis Of Dispersion ◽  
Fermented Milk Products

Nowadays, we can see on market mainly fermented milk products with addition of probiotic microorganisms, especially strains of Lactobacillus and Bifidobacterium. We can meet also other types of pro­bio­tic products. It is recommended to consume at least 100 grams of fermented milk products with mi­ni­mal concentration of 106 of probiotics in one gram or mililitr of product daily for reaching positive effect on men’s health. During fermentation of the carbohydrates, proteins and lipids are disunite and many of aromatic compounds ane compose. They give a typical sensory characteristic to fermented milk products. For quality and quantity level of probiotics, changes of pH value and sensory qua­li­ty of five kinds of fermented milk product Yoghurt Drink with different flavour were analyzed during the whole expiration period (28 days). Obtained results were statistically evaluated via the analysis of variance and the method of multiple comparison according to Tukey test (P < 0,010) and (P < 0,001). During the minimal endurance time lactic acid bacteria and Bifidobacterium sp. were evaluated and changes of descriptors and pH value were detected. Number of LAB was up to 107 CFU/ml in all samples during 28 days of analysis. Only at sample 2 the number of LAB was 106 CFU/ml. Bifidobacterium sp. grew about degree. The number of LAB and Bifidobacterium sp. of yoghurt drink correspond with public notice number 77/2003 Sb, LAB 107 nad Bifidobacterium sp. 106 KTJ / ml. During 28 days of storage the pH value decreased. The biggest pH drop was recorded between 21. and 28. days of sto­ra­ge in all samples. The beginning pH value was 4.03–4.07 and the final value was between 3.80–3.95.The results of sensory evaluation processed by analysis of dispersion according to type were statistically conlusive in descriptors thickness, texture, intensity of smell, pleasantness of taste and general impression. The results of sensory evaluation processed by analysis of dispersion according to days of storage were statistically conlusive in descriptor pleasantness of smell.

scholarly journals Characteristics of Goat Milk Kefir with Addition of Red Yeast Rice Extract During Storage

2021 ◽  
Vol 45 (1) ◽  
pp. 47
Author(s):  
Dilla Melani ◽  
Nurliyani Nurliyani ◽  
Indratiningsih Indratiningsih
Keyword(s):  
Antioxidant Activity ◽  
Antibacterial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Ph Value ◽  
Goat Milk ◽  
Total Count ◽  
Red Yeast Rice ◽  
Alcohol Content ◽  
E Coli

Kefir is one of milk products, produced by the addition of bacteria and yeast-containing kefir starter. This study aimed to evaluate the microbial characteristic, antibacterial activity, chemical and physical characteristics, antioxidant activity, and organoleptic characteristic of goat milk kefir which treated with angkak (red yeast rice) extract supplementation during storage. The study was initiated with milling to produce angkak flour, which then was diluted on sterilized distilled water on 1:2 ratio. Kefir were obtained by fermenting goat milk using 3% kefir grain for 18 hours at room temperature. Different treatments on the study were angkak extract supplementations on level of 0; 2; 4; and 6% for three different storage periods, i.e., 0, 7, and 14 days. The parameter of microbial characteristics observed on this study were total of lactic acid bacteria, TPC, total yeast, and antibacterial activity. Chemical tests performed on this study included the value of acidity, pH value, alcohol content, and water content. Meanwhile, the physical evaluations included viscosity, color test (brightness value, red value, and yellow value), and followed with antioxidant activity test on DPPH method and organoleptic test. Data from chemical, microbial, and physical evaluation were analyzed on one way ANOVA for these following parameters: total count of lactic acid bacteria, TPC, antibacterial activity, value of acidity, pH value, alcohol content, water content, viscosity, brightness value, red value, yellow value, antioxidant activity, and sensory values (alcoholic taste and acceptability). The analysis were further continued on two way ANOVA for total count of lactic acid bacteria, TPC, antibacterial activity on E. coli and S. aureus, alcohol content, viscosity, brightness value, red value, yellow value, and antioxidant activity. Meanwhile, the organoleptic characteristics were analyzed on non-parametric Kruskal Wallis, followed by Duncan’s multiple range test (DMRT).  Data were analyzed on computer program of Software Statistical Product and Service Solution (SPSS) version 18 for windows. The study revealed that angkak extract supplementation on goat milk kefir during 0, 7, and 14 days of storage had significant effects (P<0.05) on total count of lactic acid bacteria, TPC count, antibacterial activity, value of acidity, pH value, alcohol content, and sensory qualities (alcoholic taste and acceptability). There was an interaction between angkak extract supplementation and storage period on total count of lactic acid bacteria, TPC, antibacterial activity on E. coli and S. aureus, alcohol content, viscosity, brightness value, red value, yellow value, and antioxidant activity. As summary, supplementation of angkak extract at 6% level and 14 days storage periods increase the microbiological quality, viscosity, alcohol content, antioxidant activity, as well as its alcoholic taste-associated acceptability, and inhibit the growth of pathogens (E. coli and S. aureus).

scholarly journals Enumeration, identification and safety proprieties of lactic acid bacteria isolated from pork sausage

2015 ◽  
Vol 67 (3) ◽  
pp. 918-926 ◽  
Author(s):  
F.S. Dias ◽  
M.R.R.M. Santos ◽  
R.F. Schwan
Keyword(s):  
Antibacterial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Selection Criteria ◽  
Meat Products ◽  
Antibacterial Activities ◽  
Safety Properties ◽  
Pork Sausage ◽  
Pork Sausages ◽  
Microbiological Analyses

Lactic Acid Bacteria (LAB) are indigenous microorganisms occurring in pork sausages. The utilization of selected autochthonous LAB may improve the safety of meat products. This study aims to enumerate and identify LAB in pork sausage and to characterize their safety properties, such as antimicrobial susceptibility and antibacterial activity. A total of 189 sealed packages of pork sausages were collected in seven municipalities (27 samples in each city) of Minas Gerais, Brazil. Microbiological analyses were performed to enumerate LAB. Two pre-selection criteria were applied to 567 isolates of LAB: catalase activity and tolerance to pH 2. A total of 32 strains of UFLA SAU were selected, characterized phenotypically and identified through 16S rDNA region sequencing. The susceptibility to antimicrobial and antibacterial activities of isolates was evaluated. The LAB count ranged from 3.079 to 8.987 log10 CFU/g. Lactobacillus plantarum and Lactobacillus paracasei were identified in the samples. UFLA SAU 11, 20, 34, 86, 131 and 258 showed a profile of susceptibility to four antimicrobials: erythromycin, ampicillin, chloramphenicol and gentamycin. In the antibacterial activity test, with exception of UFLA SAU 1, all other strains showed efficiency in inhibiting Escherichia coli, Salmonella Typhiand Listeria monocytogenes. In the statistical analysis there was interaction among strains of Lactobacillus against the pathogens tested. L. monocytogenes (P=0.05) was more sensitive to Lactobacillus strains and the highest inhibitory activity against this pathogen was achieved by strains UFLA SAU 135, 226, 238 and 258. Thus, UFLA SAU 11, 20, 34, 86, 131, 135, 226, 238 and 258 possess safety characteristics for application in meat products.

Viabilitas Bakteri Asam Laktat dan Aktivitas Antibakteri Produk Susu Fermentasi Komersial terhadap Beberapa Bakteri Patogen Enterik

2014 ◽  
Vol 19 (1) ◽  
Author(s):  
Ekawati Purwijantiningsih
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Pathogenic Bacteria ◽  
Antibacterial Effect ◽  
Fermented Milk ◽  
Diffusion Method ◽  
Milk Products

AbstractFermented milk products could be found on the marketplace in great quantities of brand and type. Fermented milk has potentials for functional food because it has health benefits for human body and acts as antimicrobial. However from all brands and types, the viability of lactic acid bacteria (LAB) and antibacterial activity is not surely known, especially in Yogyakarta. The aim of this study was to determine the viability of lactic acid bacteria and antibacterial effect to three enteric pathogenic bacteria. Tests were carried out on 18 samples of fermented milk from supermarkets in Yogyakarta. Base on LAB viability test, 12 samples fulfilled the concentration of probiotic bacteria, number of viable bacteria at least 108 CFU/ml. Antibacterial activity from 18 brands against Staphylococcus aureus, Escherichia coli and Salmonella sp. by using well diffusion method. Fermented milk products have different antibacterial activities. Brand R showed the maximum antibacterial effect against the pathogens. It was determined that the most sensitive pathogenic bacteria to milk fermented products were S. aureus, whereas the least sensitive pathogen was Salmonella sp.Keywords: Antibacterial, fermented milk, viability of lactic acid bacteriaAbstrakProduk susu fermentasi dapat ditemukan di pasaran dalam berbagai merk dan jenis. Susu fermentasi tersebut berpotensi sebagai pangan fungsional karena memiliki manfaat kesehatan bagi manusia dan berperan sebagai antimikrobia. Akan tetapi dari berbagai merk dan jenis yang ada belum diketahui secara pasti mengenai viabilitas bakteri asam laktat (BAL) dan aktivitas antibakterinya terutama yang beredar di wilayah Yogyakarta. Penelitian ini bertujuan mengetahui viabilitas BAL dan efek antibakteri terhadap tiga bakteri patogen enterik. Uji dilakukan pada 18 sampel susu fermentasi yang berasal dari supermaket di kota Yogyakarta. Berdasarkan uji viabilitas BAL, ada 12 sampel yang memenuhi standar konsentrasi bakteri probiotik,paling tidak mengandung 108 CFU/ml. Aktivitas antibakteri dari 18 merk diuji terhadap Staphylococcus aureus, Escherichia coli dan Salmonella sp. menggunakan metode difusi sumuran. Produk minuman susu fermentasi memiliki kemampuan antibakteri yang berbeda. Merk R menunjukkan efek antibakteri paling tinggi terhadap beberapa bakteri patogen. Bakteri patogen yang paling sensitif terhadap produk susu fermentasi adalah S. aureus, yang paling tidak sensitif adalah Salmonella sp.Kata kunci: Antibakteri, susu fermentasi, viabilitas BAL

scholarly journals Antidiabetic, Antioxidants and Antibacterial Activities of Lactic Acid Bacteria (LAB) from Masin (Fermented Sauce from Sumbawa, West Nusa Tenggara, Indonesia)

2020 ◽  
Vol 24 (1) ◽  
pp. 27
Author(s):  
Baso Manguntungi ◽  
Dinar Suksmayu Saputri ◽  
Apon Zaenal Mustopa ◽  
Nurlaili Ekawati ◽  
Maritsa Nurfatwa ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antibacterial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Antidiabetic Activity ◽  
Strain Atcc ◽  
Antibacterial Compounds ◽  
Effective Antioxidant

The study aimed to determine the effectiveness of metabolites from Lactic Acid Bacteria (LAB) derived Masin (fermented sauce from Sumbawa) as antioxidant, antidiabetic, and antibacterial compounds. The LAB isolates were isolated from various strains of Staphylococcus piscifermentan which consisted of Staphylococcus piscifermentans strain CIP103958 (code: 2), strain BULST54 (code: 17), strain SK03 (code: 11), strain ATCC 51136 (code: 34), strain PCM 2409 (code: 28) and strain PU-87 (code: 5). The Metabolites of LAB were analyzed by the bioprospecting test to indicate antidiabetic, antioxidant and antibacterial activities. The isolate (Code: 5) at 500 ug/ml showed the most effective antioxidant activity up to 71%. The isolate (code: 28), at  300 ug/ml revealed to have the most antidiabetic activity up to  43 %. The isolate (code: 2) showed moderate antibacterial activity with  the inhibition zone of 5.59 mm. The results of the antidiabetic, antioxidant and antibacterial activity showed that the  secondary metabolites produced by LAB from the Masin have broad activities as an  antidiabetic, antioxidant and antibacterial.

scholarly journals Optimasi Konsentrasi Fruktooligosakarida untuk Meningkatkan Pertumbuhan Bakteri Asam Laktat Starter Yoghurt (CONCENTRATION OPTIMIZATION OF FRUCTOOLIGOSACCHARIDES TO INCREASE GROWTH OF LACTIC ACID BACTERIA YOGHURT STARTER)

2017 ◽  
Vol 18 (3) ◽  
pp. 428
Author(s):  
Raden Haryo Bimo Setiarto ◽  
Nunuk Widhyastuti ◽  
Nimas Ayu Rikmawati
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Optical Density ◽  
Lactobacillus Acidophilus ◽  
Ph Value ◽  
Fermented Milk ◽  
Lactobacillus Bulgaricus ◽  
Plate Count ◽  
Exponential Growth Phase ◽  
Total Plate Count

Fructooligosaccharides are prebiotic source that widely used in food products, such as: fermented milk and infant formula. Prebiotics are food components that cannot be digested in the digestive tract enzymatically. However, they can be fermented by probiotic bacteria in the colon. This study aimed to determine the optimum concentrations of fructooligosaccharides in order to increase the growth of lactic acid bacteria yogurt starter (Lactobacillus acidophillus, Lactobacillus bulgaricus, Streptococcus thermophillus). Optimation concentration of fructooligosaccharides on the growth of Lactobacillus acidophilus, Lactobacillus bulgaricus, Streptococcus thermophillus can be determined based on OD (optical density), TPC (Total Plate Count), total lactic acid content and pH value. Suplementation of fructooligosaccharides 1 % (w/v) on the media MRSB increased significantly the growth of L. acidophilus, L.bulgaricus, S. thermophilus. Furthermore, L. acidophilus, L. bulgaricus and S. thermophilus experienced exponential growth phase during incubation period from 6 to 18 hours. Fermentation of L. acidophilus, L. bulgaricus, S. thermophilus in MRSB medium supplemented by fructooligosaccharides decreased the pH value of the formation of organic acids from 6.00 to 4.00. ABSTRAK Fruktooligosakarida adalah sumber prebiotik yang banyak digunakan dalam produk pangan olahan seperti susu fermentasi dan susu formula. Prebiotik adalah komponen bahan pangan fungsional yang tidak dapat dicerna di dalam saluran pencernaan secara enzimatik sehingga akan difermentasi oleh bakteri probiotik dalam usus besar. Penelitian ini bertujuan menentukan konsentrasi optimum fruktooligosakarida untuk meningkatkan pertumbuhan bakteri asam laktat starter yoghurt (Lactobacillus acidophillus, Lactobacillus bulgaricus, Streptococcus thermophillus). Konsentrasi optimum fruktooligosakarida pada pertumbuhan Lactobacillus acidophilus, Lactobacillus bulgaricus, Streptococcus thermophillus dapat ditentukan berdasarkan OD (optical density), TPC (Total Plate Count), total asam laktat tertitrasi dan nilai pH. Penambahan fruktooligosakarida 1% (b/v) pada media MRSB (Man, Rogosa Sharpe Broth) dapat meningkatkan secara signifikan pertumbuhan L. acidophilus, L. bulgaricus, S. thermophilus. Bakteri asam laktat L. acidophilus, L. bulgaricus dan S. thermophilus mengalami fase pertumbuhan eksponensial selama masa inkubasi 6-18 jam. Fermentasi L. acidophilus, L. bulgaricus, S. thermophilus pada MRSB dengan penambahan fruktooligosakarida dapat menurunkan nilai pH dari kisaran 6,00 hingga 4,00 karena pembentukan asam-asam organik.

scholarly journals Dynamics of Fermentation Parameters and Bacterial Community in High-Moisture Alfalfa Silage with or without Lactic Acid Bacteria

2021 ◽  
Vol 9 (6) ◽  
pp. 1225
Author(s):  
Shanshan Zhao ◽  
Fengyuan Yang ◽  
Yuan Wang ◽  
Xiaomiao Fan ◽  
Changsong Feng ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Bacterial Community ◽  
Ph Value ◽  
Ammoniacal Nitrogen ◽  
High Concentration ◽  
High Moisture ◽  
Acid Accumulation ◽  
Alfalfa Silage ◽  
Fermentation Parameters

The aim of this study was to gain deeper insights into the dynamics of fermentation parameters and the bacterial community during the ensiling of high-moisture alfalfa. A commercial lactic acid bacteria (YX) inoculant was used as an additive. After 15 and 30 days of ensiling, the control silage (CK) exhibited a high pH and a high concentration of ammoniacal nitrogen (NH3-N); Enterobacter and Hafnia-Obesumbacterium were the dominant genera. At 60 d, the pH value and the concentration of NH3-N in CK silage increased compared with 15 and 30 d, propionic acid and butyric acid (BA) were detected, and Garciella had the highest abundance in the bacterial community. Compared with CK silage, inoculation of YX significantly promoted lactic acid and acetic acid accumulation and reduced pH and BA formation, did not significantly reduce the concentration of NH3-N except at 60 d, and significantly promoted the abundance of Lactobacillus and decreased the abundance of Garciella and Anaerosporobacter, but did not significantly inhibit the growth of Enterobacter and Hafnia-Obesumbacterium. In conclusion, high-moisture alfalfa naturally ensiled is prone to rot. Adding YX can delay the process of silage spoilage by inhibiting the growth of undesirable microorganisms to a certain extent.

Evaluation of the antibacterial activity of allyl isothiocyanate, clove oil, eugenol and carvacrol against spoilage lactic acid bacteria

LWT ◽  
2021 ◽  
Vol 145 ◽  
pp. 111263
Author(s):  
Hajime Takahashi ◽  
Ayaka Nakamura ◽  
Nanami Fujino ◽  
Yuzuru Sawaguchi ◽  
Miki Sato ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Allyl Isothiocyanate ◽  
Clove Oil
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