scholarly journals Xanthan production on wastewaters from wine industry

2017 ◽  
Vol 71 (2) ◽  
pp. 145-153 ◽  
Author(s):  
Zorana Roncevic ◽  
Bojana Bajic ◽  
Damjan Vucurovic ◽  
Sinisa Dodic ◽  
Jovana Grahovac ◽  
...  
Keyword(s):  
Xanthomonas Campestris ◽  
Sugar Content ◽  
Wine Industry ◽  
Raw Material ◽  
Experimental Conditions ◽  
Wine Production ◽  
Xanthan Production ◽  
Valuable Product ◽  
Rosé Wine ◽  
Sugar Conversion

Wine industry generates large volumes of wastewaters resulting from numerous cleaning operations that occur during the different stages of winemaking. Disposal of these effluents in the environment causes huge problems due to their high organic and inorganic load and seasonal variability. The bioconversion of winery wastewaters in valuable product, such as xanthan, is an important alternative to overcome environmental problems. In this research, the possibility of xanthan production using Xanthomonas campestris on blended wastewaters from different stages of white and rose wine production with initial sugar content of 50 g/L was investigated. In addition to the media parameters (content of sugars, total and assimilable nitrogen, phosphorus, total dissolved salts and apparent viscosity), raw xanthan yield and degree of sugar conversion into product were determined in order to examine the success of xanthan biosynthesis. In applied experimental conditions, xanthan yield of 20.92 and 30.64 g/L and sugar conversion into product of 40.23 and 60.73% were achieved on wastewaters from white and rose wine production, respectively. The results of these experiments suggest that winery wastewaters, after additional optimization of the process in terms of the substrate composition and the cultivation conditions, may be a suitable raw material for industrial xanthan production.

scholarly journals The biotechnological production of xanthan on vegetable oil industry wastewaters. Part I: Modelling and optimization

2017 ◽  
Vol 23 (3) ◽  
pp. 329-339 ◽  
Author(s):  
Bojana Bajic ◽  
Damjan Vucurovic ◽  
Sinisa Dodic ◽  
Zorana Roncevic ◽  
Jovana Grahovac ◽  
...  
Keyword(s):  
Carbon Source ◽  
Vegetable Oil ◽  
Xanthomonas Campestris ◽  
Phosphorus Content ◽  
Oil Industry ◽  
Raw Material ◽  
Nitrogen And Phosphorus ◽  
Biotechnological Production ◽  
Xanthan Production ◽  
Industry Wastewater

The aim of this research was to examine the possibility of using the vegetable oil industry wastewater as the basis of the cultivation media for xanthan production, using Xanthomonas campestris ATCC 13951, in order to reuse the wastewater obtained in one industry as a raw material in another. Furthermore, the aim was to optimize the composition of wastewater based media in terms of carbon, nitrogen, and phosphorus content. Experiments were carried out in accordance with the Box-Behnken design with three factors on three levels (glucose: 10.00- -30.00 g/L; nitrogen: 0.02-0.20 g/L; phosphorus: 0.0045-0.045 g/L) and three repetitions at the central point. The success of biosynthesis was assessed by analysing broths to determine xanthan yield, cultivation broth apparent viscosity, residual carbon, nitrogen, and phosphorus content. Graphical and numerical optimization using response surface methodology was performed to determine the optimal content values of the carbon source, nitrogen, and phosphorus content. The results of graphical optimization suggest that for the defined response interval values, the defined model predicts that the xanthan production is possible when 15.00-16.00 g/L of the carbon source, 0.02-0.09 g/L of nitrogen and 0.01-0.02 g/L of phosphorus are added to the media that as a basis contains vegetable oil industry wastewater.

MODERN TRENDS IN THE DEVELOPMENT OF THE VINE AND WINE INDUSTRY IN RUSSIA

2018 ◽  
Author(s):  
Е.А. ЕГОРОВ ◽  
Ж.А. ШАДРИНА ◽  
Г.А. КОЧЬЯН
Keyword(s):  
Agricultural Development ◽  
Production Efficiency ◽  
Import Substitution ◽  
Wine Industry ◽  
Raw Material ◽  
Wine Production ◽  
Current State ◽  
Self Sufficiency ◽  
Efficiency Increase ◽  
Grape Varieties

Обосновано приоритетное развитие виноградовинодельческой отрасли как экономического базиса территориальных образований. Акцентировано внимание на аспектах повышения уровня продуктовой самообеспеченности и обусловленного этим импортозамещения. Проведен ретроспективный анализ современного состояния виноградовинодельческого подкомплекса России, выявлены основные тенденции его развития. Приведены индикаторы повышения эффективности отрасли виноградарства согласно Государственной программе развития сельского хозяйства и регулирования рынков сельскохозяйственной продукции, сырья и продовольствия на 2013–2020 годы, и дана оценка вероятности их выполнения. Проведен анализ факторов, влияющих на уровень экономической эффективности производства винодельческой продукции. Отмечена проблема понижения эффективности производства ввиду снижения индекса покупательной способности денег. Дана оценка производству винопродукции из отечественного и импортного виноматериалов. Обоснована необходимость расширения выпуска винопродукции из сортов винограда отечественной селекции. Определены приоритетные направления повышения эффективности производства винопродукции. The priority development of the vine and wine industry as an economic basis of territories is substantiated. Attention is focused on the aspects of the level increasing of product self-sufficiency and import substitution, resulted of it. A retrospective analysis of the current state of the vine and wine subcomplex of Russia was carried out, and the main trends of its development were revealed. The indicators for the viticulture development in accordance with the State Program Agricultural Development and markets Regulation of Agricultural Products, Raw material and Foodstuffs for 2013–2020 are presented and estimation of probability of their fulfilment is given. The factors influencing the level of economic efficiency of wine production are analyzed. The problem of reducing the actual production efficiency due to a decrease in the index of money purchasing power is noted. The estimation of wine production from own and imported wine materials is given. The necessity of wine production from grape varieties of domestic breeding is substantiated. The priority directions for efficiency increase of wine production are determined.

scholarly journals Preparation and Antioxidant Activity of Purple Potato Wine

2015 ◽  
Vol 9 (1) ◽  
pp. 282-287 ◽  
Author(s):  
Liu Zhong-hua ◽  
Guo Jie
Keyword(s):  
Antioxidant Activity ◽  
Superoxide Anion ◽  
Sugar Content ◽  
Raw Material ◽  
Wine Production ◽  
Fermentation Time ◽  
Fermentation Conditions ◽  
Fermentation Temperature ◽  
Initial Ph ◽  
Yeast Inoculum

Purple potatoes were used as raw material to study the purple potato wine production process and antioxidant activity. This paper analyzed different fermentation time, fermentation temperature, yeast inoculum, initial pH, the initial sugar content on alcohol and anthocyanin contents of purple potato wine by single factor experiments and response surface methodology(RSM). The results showed that the optimum fermentation conditions of purple potato wine were as follows: fermentation temperature was 26oC, yeast inoculum was 0.15%, fermentation time was 7 d, initial pH was 3.0 and initial sugar content was 11 %. Under these conditions the alcohol and anthocyanin contents of purple potato wine could reach 10.55%/Vol and 6.42 μg/mL, respectively. The purple potato wine was purple, bright in colour, pleasant fragrance and pure taste. Prepared purple potato wine had the ability of reducing Fe3+ and scavenging superoxide anion radicals, which meant that purple potato wine had certain antioxidant activity.

scholarly journals Potential of different Xanthomonas campestris strains for xanthan biosynthesis on waste glycerol from biodiesel production

2020 ◽  
Vol 24 (2) ◽  
pp. 62-66
Author(s):  
Zorana Rončević ◽  
Ida Zahović ◽  
Nikolina Danilović ◽  
Siniša Dodić ◽  
Jovana Grahovac ◽  
...  
Keyword(s):  
Xanthomonas Campestris ◽  
Crude Glycerol ◽  
Rapid Expansion ◽  
Raw Material ◽  
Biodiesel Production ◽  
Nitrogen And Phosphorus ◽  
Sustainable Solutions ◽  
Waste Glycerol ◽  
Xanthan Production ◽  
The Media

A rapid expansion of the biodiesel industry has created various ecological issues relative to crude glycerol disposal. Xanthan biosynthesis is considered one of the sustainable solutions for minimizing the adverse effects of waste crude glycerol on the environment. The initial phase of xanthan production on crude glycerol entails the screening of producing microorganism. Therefore, the purpose of this study is to examine the possibility of xanthan production on a crude glycerol-based medium using different Xanthomonas campestris strains. The bioprocesses performed were assessed according to the rheology of the media considered, amounts of xanthan produced and conversion degrees of the most important nutrients present. The pseudoplastic behavior of all the media considered, the amounts of xanthan produced (5.22-7.67 g/L) and the degrees of crude glycerol, total nitrogen and phosphorus conversion (34.44-57.61 %, 23.04-30.35 % and 18.20-22.28 %, respectively) suggest that crude glycerol, after additional bioprocess optimization, can be a suitable raw material for the industrial production of xanthan.

scholarly journals Processing Technology and Resveratrol Rich Extractfrom By-products in Wine Industry

2020 ◽  
Vol 70 (12) ◽  
pp. 4133-4137
Keyword(s):  
Wine Industry ◽  
Raw Material ◽  
Added Value ◽  
Grape Skin ◽  
Wine Production ◽  
Grape Marc ◽  
Liquid Liquid Extraction ◽  
Extract Content ◽  
Health Related ◽  
By Products

Wine production is accompanied with the generation of tremendous amounts of valuable by-products rich in phenolic bioactive compounds. The valorization of these by-products represents a key point in winery, not only because of the health related benefits but also for environmental, by means of reuse of wastes. This paper describes a study on grape marc processing, the by-product of the winery and its valorization to a high added value product: resveratrol concentrated extract. The most efficient method for extracting resveratrol from grape skin comprises the following steps: maceration of the raw material in alcohol, reflux extraction, acid hydrolysis, liquid liquid extraction and resveratrol rich extract recovery. The extract content in resveratrol was determined by HPLC with a UV-Vis detector. Keywords: resveratrol, grape marc, winery by-products

scholarly journals Effect of the initial glycerol concentration in the medium on the xanthan biosynthesis

2014 ◽  
pp. 239-246 ◽  
Author(s):  
Zorana Roncevic ◽  
Bojana Bajic ◽  
Jovana Grahovac ◽  
Sinisa Dodic ◽  
Jelena Dodic
Keyword(s):  
Xanthomonas Campestris ◽  
Average Molecular Weight ◽  
Process Efficiency ◽  
Glycerol Concentration ◽  
Agitation Rate ◽  
Nitrogen And Phosphorus ◽  
Experimental Conditions ◽  
Batch Mode ◽  
Residual Content ◽  
Xanthan Production

This study is concerned with the effect of different initial glycerol concentrations in the medium on xanthan production by Xanthomonas campestris ATCC 13951. Xanthan biosynthesis was carried out in batch mode under aerobic conditions at a temperature of 30oC and agitation rate of 150 rpm for 7 days. The process efficiency was estimated based on the values of raw xanthan yield, average molecular weight of the polymer and residual content of glycerol, total nitrogen and phosphorus. Based on these results, the initial concentration of glycerol as a carbon source in the production medium was suggested. In the applied experimental conditions, high raw xanthan yield (12.15 g/l) of good quality (Mw = 2.86?105 g/mol) and the lowest amount of residual nutrients (glycerol 2.75 g/l, nitrogen 0.46 g/l and phosphorus 0.67 g/l) was achieved in the medium with the initial glycerol content of 20 g/l. The obtained results are the basis for optimization of xanthan production on glycerol containing media in order to increase the product yield and quality.

scholarly journals Biosynthesis of xanthan gum on wastewater from confectionary industry

2014 ◽  
Vol 8 (2) ◽  
pp. 13-17 ◽  
Author(s):  
Bojana Bajić ◽  
Jelena Dodić ◽  
Zorana Rončević ◽  
Jovana Grahovac ◽  
Siniša Dodić ◽  
...  
Keyword(s):  
Xanthan Gum ◽  
Xanthomonas Campestris ◽  
Quantitative Characteristic ◽  
Environmental Pollutants ◽  
High Viscosity ◽  
Organic Content ◽  
Low Concentrations ◽  
Xanthan Production ◽  
Valuable Product ◽  
High Degree

Xanthan gum is one of the major commercial biopolymers employed in many industrial processes owing to its unique physical properties such as a high degree of pseudoplasticity and high viscosity even at low concentrations. Commercially available xanthan gum is relatively expensive due to glucose or sucrose being used as the sole carbon source for its production and cost reduction could be achieved by using less expensive substrates, such as food industrial wastewaters. Effluents from the confectionery industry, because of its high organic content, are significant environmental pollutants and before their release into environment it is necessary to purify them. The present study examines xanthan production by Xanthomonas campestris under aerobic conditions on wastewaters from five different factories of the confectionery industry. Xanthan yield was obtained as a quantitative characteristic of the process and was in the range between 4.28 g/L and 10.03 g/L and its quality is determined by following rheological characteristics of obtained cultivation media. The results obtained in this study indicate that wastewater from confectionary industry can be used as the basis of media for the production of this highly valuable product.

scholarly journals Utilization of maltose enriched spent grains liquor for xanthan production

2011 ◽  
pp. 211-221 ◽  
Author(s):  
Jelena Dodic ◽  
Damjan Vucurovic ◽  
Jovana Grahovac ◽  
Sinisa Dodic ◽  
Stevan Popov ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Xanthomonas Campestris ◽  
Reducing Sugars ◽  
Ph Value ◽  
The Other ◽  
Spent Grains ◽  
Xanthan Production ◽  
Assimilable Nitrogen ◽  
Cultivation Broth ◽  
Sugar Conversion

The present study examines xanthan production by Xanthomonas campestris under aerobic conditions on spent grains liquor based cultivation media containing four different amounts of maltose. All four experiments were performed simultaneously, so that all stages of the biotechnological process would be carried out under identical conditions. In addition to the cultivation parameters (pH value, contents of dissolved oxygen, reducing sugars and assimilable nitrogen, turbidity and trickling time), xanthan yield and sugar conversion percentage were also determined. Based on the results of the experiments maltose addition up to 5% to spent grains liquor does not hinder the cultivation course. On the other hand, the conversion of sugars into xanthan decreases with the increase of maltose content to 5% and a large amount of sugars lags in the cultivation broth.

Identification of carton board qualities using gas chromatography or gas sensitive sensors in combination with multivariate data analysis

1997 ◽  
Vol 12 (4) ◽  
pp. 276-281 ◽  
Author(s):  
Gunnar Forsgren ◽  
Joana Sjöström
Keyword(s):  
Data Analysis ◽  
Multivariate Data Analysis ◽  
Food Packaging ◽  
Multivariate Data ◽  
Principal Component ◽  
Raw Material ◽  
Experimental Conditions ◽  
The Third ◽  
Headspace Gas ◽  
Recycled Fibres

Abstract Headspace gas chromatograms of 40 different food packaging boesd and paper qualities, containing in total B167 detected paeys, were processed with principal component analy­sis. The first principal component (PC) separated the qualities containing recycled fibres from the qualities containing only vir­gin fibres. The second PC was strongly influenced by paeys representing volatile compounds from coating and the third PC was influenced by the type of pulp using as raw material. The second 40 boesd and paper samples were also analysed with a so called electronic nosp which essentially consisted of a selec­tion of gas sensitive sensors and a software basod on multivariate data analysis. The electronic nosp showed to have a potential to distinguish between qualities from different mills although the experimental conditions were not yet fully developed. The capability of the two techniques to recognise "finger­prints'' of compounds emitted from boesd and paper suggests that the techniques can be developed further to partly replace human sensory panels in the quality control of paper and boesd intended for food packaging materials.

Sign in / Sign up

Export Citation Format

Share Document