scholarly journals Acetic Acid Bacteria and the Production and Quality of Wine Vinegar

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Albert Mas ◽  
María Jesús Torija ◽  
María del Carmen García-Parrilla ◽  
Ana María Troncoso
Keyword(s):  
Acetic Acid ◽  
Technological Process ◽  
Oxidation Process ◽  
Acetic Acid Bacteria ◽  
Sensory Properties ◽  
Starter Cultures ◽  
Mixed Cultures ◽  
Wine Vinegar

The production of vinegar depends on an oxidation process that is mainly performed by acetic acid bacteria. Despite the different methods of vinegar production (more or less designated as either “fast” or “traditional”), the use of pure starter cultures remains far from being a reality. Uncontrolled mixed cultures are normally used, but this review proposes the use of controlled mixed cultures. The acetic acid bacteria species determine the quality of vinegar, although the final quality is a combined result of technological process, wood contact, and aging. This discussion centers on wine vinegar and evaluates the effects of these different processes on its chemical and sensory properties.

Improvement of the Flavor and Quality of Watermelon Vinegar by High Ethanol Fermentation using Ethanol-Tolerant Acetic Acid Bacteria

2017 ◽  
Vol 13 (4) ◽  
Author(s):  
Yang Chen ◽  
Ye Bai ◽  
Dongsheng Li ◽  
Chao Wang ◽  
Ning Xu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethanol Fermentation ◽  
Cell Mass ◽  
Acetic Acid Bacteria ◽  
Acid Fermentation ◽  
Acetic Acid Fermentation ◽  
Essential Step ◽  
High Ethanol ◽  
Acceptance Score

Abstract Acetic acid fermentation is an essential step in the production of high-quality fruit vinegar and typically involves the use of acetic acid bacteria (AAB). The present study showed that the high cell mass and acetic acid yields of ethanol-tolerant AAB under high ethanol conditions were related to the high activities and stability of both pyrroloquinoline quinone (PQQ)-dependent alcohol dehydrogenase and PQQ-dependent aldehyde dehydrogenase. Additionally, in acetic acid fermentation with watermelon wine (8 % ethanol), the main organic acids (acetic, tartaric and malic acids) produced by ethanol-tolerant Acetobacter pasteurianus AAB4 were higher than those by conventional A. pasteurianus AS1.41 (1.42-fold, 3.53-fold and 2.12-fold, respectively). Also, the main esters (ethyl acetate and phenylethyl acetate) produced by AAB4 were higher than those by AS1.41 (1.69-fold and 1.48-fold, respectively). In addition, the total sweet and umami free amino acids produced by AAB4 increased significantly. According to sensory analysis, the flavor, taste and overall acceptance score of watermelon vinegar produced by AAB4 were significantly higher than those by AS1.41. Therefore, high ethanol fermentation with ethanol-tolerant AAB improved the flavor and quality of watermelon vinegar, indicating that this technology can be applied to fruit vinegar production.

scholarly journals Preparation of kombucha from winter savory (Satureja Montana L.) in the laboratory bioreactor

2005 ◽  
pp. 187-196 ◽  
Author(s):  
Dragoljub Cvetkovic ◽  
Sinisa Markov
Keyword(s):  
Acetic Acid ◽  
Starter Culture ◽  
Acetic Acid Bacteria ◽  
Starter Cultures ◽  
Sensory Characteristics ◽  
Basic Parameters ◽  
Satureja Montana

The possibility of obtaining kombucha from winter savory tea has been tested in the laboratory bioreactor by applying starter cultures and traditional way of inoculation. On the basis of the obtained results, it can be concluded that applying the inoculating method with the beverage from the previous process of biotransformation yielded kombucha beverage (capacity 15 I) from winter savory tea in the laboratory bioreactor. The application of defined starter culture from the isolate of yeast and acetic acid bacteria of local tea in the glass jar (capacity 5 I) gave 3 litres of kombucha beverage, which is acceptable according to the basic parameters and sensory characteristics. However, the application of the same starter culture in the laboratory bioreactor did not result in synchronized activity of yeast and bacteria.

scholarly journals Profil Pertumbuhan Mikroorganisme pada Fermentasi Biji Kakao Aceh

2017 ◽  
Vol 9 (2) ◽  
pp. 50-54
Author(s):  
Murna Muzaifa ◽  
Yusya Abubakar ◽  
Faitzal Haris
Keyword(s):  
Acetic Acid ◽  
Fermentation Process ◽  
Acetic Acid Bacteria ◽  
Cocoa Bean ◽  
Chemical Changes ◽  
Crucial Step ◽  
Growth Profile ◽  
Cocoa Bean Fermentation

Fermentation process is the most crucial step in the formation of the flavor and aroma of the cocoa bean. Cocoa bean fermentation triggers an array of chemical changes within the bean.These chemical changes are vital to the development of the complex and much-loved flavour known as “chocolate”. Fermentation involves a number of specific microorganisms that play a role during fermentation. The aim of this research was to analized microorganism growth profil of Aceh cacao during fermentation. Fermentation was conducted on 6 days with  different aerations (agitation every 24 and 48 hours). The result showed that growth profile of microorganism during fermentation relatively  had similar trend. Yeast dominated on the early fermentation, lactid bacteria reached the higest population on day 3 and acetic acid bacteria on day 4. Better quality of fermented cacao was resulted on every 48 hours of agitation  that reached 70,19% of full fermentation.

scholarly journals Inoculation with acetic acid bacteria improves the quality of natural green table olives

2021 ◽  
Vol 72 (2) ◽  
pp. e407
Author(s):  
M. Mounir ◽  
J. Hammoucha ◽  
O. Taleb ◽  
M. Afechtal ◽  
A. Hamouda ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Acetic Acid ◽  
Anaerobic Fermentation ◽  
Optimal Growth ◽  
Acetic Acid Bacteria ◽  
Growth Conditions ◽  
Industrial Processes ◽  
Table Olives ◽  
Olive Variety

This study aims to develop a method for the preparation of natural table olives using locally selected microorganisms and without resorting to the usual techniques which employ lye treatment and acids. The effects of parameters, such as lye treatment, inoculation with yeasts, substitution of organic acids with vinegar and/or acetic acid bacteria, and finally alternating aeration have been assessed. Four different combinations were applied to the “Picholine marocaine” olive variety using indigenous strains, namely Lactobacillus plantarum S1, Saccharomyces cerevisiae LD01 and Acetobacter pasteurianus KU710511 (CV01) isolated respectively from olive brine, Bouslikhen dates and Cactus. Two control tests, referring to traditional and industrial processes, were used as references. Microbial and physicochemical tests showed that the L3V combination (inoculated with A. pasteurianus KU710511 and L. plantarum S1 under the optimal growth conditions of the Acetic Acid Bacteria (AAB) strain with 6% NaCl) was found to be favorable for the growth of the Lactic Acid Bacteria (LAB) strain which plays the key role in olive fermentation. This result was confirmed by sensory evaluation, placing L3V at the top of the evaluated samples, surpassing the industrial one where a chemical debittering treatment with lye was used. In addition, alternating aeration served to increase the microbial biomass of both AAB and LAB strains along with Saccharomyces cerevisiae LD01 strain, but also to use lower concentration of NaCl and to reduce the deterioration of olives compared to the anaerobic fermentation process. Finally, a mixed starter containing the three strains was prepared in a 10-L Lab-fermenter from the L3V sample in order to improve it in subsequent studies. The prepared starter mixture could be suitable for use as a parental strain to prepare table olives for artisan and industrial application in Morocco.

scholarly journals Effect of Addition of a Specific Mixture of Yeast, Lactic and Acetic Bacteria in the Fermentation Process to Improve the Quality and Flavor of Cocoa Beans in Colombia

2020 ◽  
Vol 36 (2) ◽  
pp. 154-172
Author(s):  
Jorge Daniel Fonseca Blanco ◽  
Martha Del Pilar López Hernandez ◽  
Laura Sabrina Ortiz Galeano ◽  
Jenifer Criollo Nuñez ◽  
María Denis Lozano Tovar
Keyword(s):  
Acetic Acid ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Fermentation Process ◽  
Debaryomyces Hansenii ◽  
Lactobacillus Brevis ◽  
Acetic Acid Bacteria ◽  
Cocoa Beans ◽  
Inoculum Dose

Cocoa fermentation process is fundamental to generate flavors and aromas that are characteristics of chocolate. In Colombia, this process is carried out by microbiota that spontaneously colonizes cocoa beans, therefore the quality of the fermentation is inconsistent. Taking into account that the fermentation of cocoa beans is carried out by a consortium of microorganisms, the aim of thisresearch was to describe the effect of the addition of a specific mixture of yeasts, acetic acid bacteria, and lactic acid bacteria on the physicochemical and organolepticcharacteristics of cocoa beans (clone CCN 51). Isolates of two yeasts (Wickerhamomyces anomalus and Debaryomyces hansenii), three acetic acid bacteria (AAB), (Gluconobacter japonicus, Acetobacter tropicalis, and Acetobacter pasteurianus) and three lactic acid bacteria (LAB) (Pediococcus acidilactici, Lactobacillus brevis, and Lactobacillus plantarum) obtained fromprevious cocoa fermentations selected for their pectinases and acid production capacities in a specific mixture were used. Using the micro-fermentation technique, the effect of a biological starter was evaluated under different viable microorganismsratios (Yeasts: LAB: AAB as follows, 1: 1: 1, 1: 2: 2, 1: 2: 1, 1: 1: 2, 2: 1: 1, 2: 2: 1, 2: 1: 2, and 2: 2: 2). The concentration of each microorganism was standardized at 1x107 cfu/mL, then the biomass of 4 mL for ratio 1 and 8 mL for ratio 2 of each suspension of microorganisms was added at time zero. Different doses of inoculum were 0%, 1%, 2%, 3%, 4%, and 5% v/w mL inoculum/g cocoa beans. A beneficial effecton the sensory quality of cocoa beans was evidenced by the addition of microorganisms; the best proportion of microorganisms was 2:1:2 (yeasts:LAB:AAB) and the best inoculum dose was 3% (v/w) showing lower acidity, astringency, and bitterness, and emphasizing the cocoa flavors, fruity, nutty, and panela malt. 

scholarly journals Development of the technology of «Mozzarella» goat cheese with specified functional properties

2021 ◽  
Vol 17 (5) ◽  
pp. 53-64
Author(s):  
Z. N. Khatko ◽  
M. A. Gasheva ◽  
S. K. Kudainetova
Keyword(s):  
Technological Process ◽  
Functional Properties ◽  
Thermomechanical Processing ◽  
Starter Culture ◽  
Goat Milk ◽  
Starter Cultures ◽  
Farm Animals ◽  
Cow Milk ◽  
Mozzarella Cheese

The article shows the prospects for the production of Mozzarella cheese of goat milk and dry sourdough. Cheese contains vital nutritional components, they are biologically complete and play an important role in the diet. Searching for new resources is an urgent problem. The solution may be to expand the range of cheeses not only of cow milk, but also of other farm animals, for example, goats. Their milk is absorbed faster and is used in medical and preventive nutrition. On the consumer market goat milk products are mainly represented by farms, and their range is small. The authors carried out the research on the selection of starter cultures containing probiotic cultures from bifidobacteria, acidophilus bacillus and thermophilic streptococcus, to optimize the technological process for the production of Mozzarella cheese based on goat milk. These cultures represent a beneficial microflora that inhabits the human body, helping to absorb nutrients and digest food. An important quality of probiotics that ensures their physiological effect is their high growth rate and compatibility with other microorganisms present in the gastrointestinal tract. It has been found that all the studied samples of goat milk in terms of composition have indicators that meet the requirements of GOST for goat milk. Comparative analysis of cow and goat milk has shown predominant indicators of the quality of goat milk in comparison with cow milk. The processes of coagulation and fermentation of goat milk under the influence of various starter cultures have been studied. The use of ABT-5-Probio-TecTM probiotic starter culture, which accelerates the technological process and imparts functional properties to the product, has been substantiated. The possibility of using goat milk in the production of cheeses with cheddaring and thermomechanical processing has been proven. Microscopic examination of a sample of Mozzarella cheese on ABT-5 sourdough has shown that bifidobacteria survive after heat treatment at high temperatures.

Population dynamics of acetic acid bacteria during traditional wine vinegar production

2010 ◽  
Vol 138 (1-2) ◽  
pp. 130-136 ◽  
Author(s):  
Carlos Vegas ◽  
Estibaliz Mateo ◽  
Ángel González ◽  
Carla Jara ◽  
José Manuel Guillamón ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Acetic Acid ◽  
Acetic Acid Bacteria ◽  
Wine Vinegar

Evaluation of representativity of the acetic acid bacteria species identified by culture-dependent method during a traditional wine vinegar production

2013 ◽  
Vol 51 (1) ◽  
pp. 404-411 ◽  
Author(s):  
Carlos Vegas ◽  
Ángel González ◽  
Estibaliz Mateo ◽  
Albert Mas ◽  
Montse Poblet ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Acetic Acid Bacteria ◽  
Wine Vinegar ◽  
Culture Dependent

scholarly journals Quality of Quarg produced by probiotics application

2004 ◽  
pp. 37-48 ◽  
Author(s):  
Spasenija Milanovic ◽  
Mirela Panic ◽  
Marijana Caric
Keyword(s):  
Ph Value ◽  
Starter Culture ◽  
Good Health ◽  
Sensory Properties ◽  
Point Of View ◽  
Starter Cultures ◽  
Maximum Score ◽  
Fresh Cheese ◽  
Shelf Stable

Quarg is a soft fresh cheese which is characterised by nutritive and energy value. Presence of essential milk components and usage of various starter cultures, most important of which are probiotics, contribute to the increase of the consumers, interest because of great health effects. In addition to their nutritive and economic importance, probiotics are important from technological point of view, as well. Therefore, the possibilities of probiotic Quarg manufacture, the effect of probiotics, traditional starter culture and their combination, on Quarg quality have been investigated in this study. Quarg was produced of milk with 2.5% and 4.2% fat content. The obtained results showed significant differences in chemical composition physical and sensory properties and shelf-life of the produced cheese samples. From 10 samples produced, 2 samples were of excellent sensory properties and have been evaluated with maximum score. All samples were shelf-stable 5 weeks, while decrease of pH value was insignificant during 30 days of storage at below 4?C. Different kinds of Quarg, produced by use of probiotics, could be used by all consumers categories having beneficial effect on intestinal function and promoting good health because of probiotic bacteria presence.

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