scholarly journals Influence of enzymatic treatments on white wine composition

2019 ◽  
Vol 15 ◽  
pp. 02032
Author(s):  
E.C. Scutaraşu ◽  
V.V. Cotea ◽  
C.E. Luchian ◽  
L.C. Colibaba ◽  
N. Katalin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Volatile Compounds ◽  
Sugar Content ◽  
Control Sample ◽  
Organoleptic Evaluation ◽  
Wine Production ◽  
Wine Making ◽  
Organoleptic Characteristics ◽  
Wide Range

Most biochemical reactions involved in the wine-making process are catalyzed by enzymes. The use of enzymes of exogenous origin in wine production is due to the numerous technological and economical advantages demonstrated over time in the winemaking process. Understanding the important role played by enzymes in wine making technology contributes to the development of optimization strategies for the production process to improve the final quality of the wine. In order to accomplish this study, the influence of five oenological preparations with pectolytic and β-glucosidases enzymes types on the volatile compounds of white wines obtained from Fetească regală variety was analyzed by monitoring their evolution during the alcoholic fermentation to the final product. Wine samples have been physically and chemically analysed (pH, acidity, alcoholic strength, density, malic acid, lactic acid, sugar content, SO2, total dry extract and non-reducing extract) according to OIV Standards. Separation and identification of flavor compounds was performed using an Agilent 7890 gas chromatograph coupled to a 5975 C inert XL EI/CI MSD spectrophotometer. The organoleptic evaluation of wines was made according to a wide range of sensory descriptors. An important evolution of volatile compounds during fermentation was observed, depending on the type of enzyme administered, compared to the control sample. Enzymatic treatments did not significantly affect the physico-chemical composition of the wines obtained. The chromatic parameters of the wine samples varied according to the type of enzyme applied. The results of the study showed a significant influence of the enzymes on the organoleptic characteristics of the wines. Therefore, the aromatic quality of a wine is directly proportional to the chemical composition of the grapes and to the technology.

scholarly journals Characteristics and Influence to Fruit Distillates Quality of Rapid Induction of Ageing Character in the Presence of Mulberry Tree (Morus alba L.) Wooden Chips

2016 ◽  
Vol 73 (2) ◽  
pp. 165
Author(s):  
Elena MUDURA ◽  
Teodora COLDEA ◽  
Timea HORVATH ◽  
Carmen Rodica POP
Keyword(s):  
Heat Treatment ◽  
Chemical Composition ◽  
Volatile Compounds ◽  
Control Sample ◽  
Polyphenolic Compounds ◽  
Chemical Parameters ◽  
Rapid Induction ◽  
Factors Influencing ◽  
Mulberry Tree

Research on rapid induction of ageing character to double distilled traditional fruit brandies, from Transylvania region was conducted. Mulberry tree chips were used as an alternative to traditional ageing in wooden barrels. The aim of this study was to highlight the factors influencing the chemical composition of fruit brandies, both depending on the type of the wood used and the transformations occurred during the heat treatment. Fruit distillates were produced after the traditional method – double distillation in copper alambic. The evaluation of the brandies consisted in analyzing the chemical parameters and the phenolic compounds after two months of ageing with wood chips. Results were compared with a control sample (unaged distillate), and found that during the ageing process volatile and non-volatile compounds were extracted significantly. The heat treatment influenced the chemical composition of the wooden chips. The chemical composition of finished products varied due to the composition of the wooden chips used and to the heat treatment applied. Evaluation of volatile and non-volatile compounds formed was carried out by comparison with the samples of the unaged distillate. It was demonstrated the improvement of chemical characteristics and polyphenolic compounds content, by rapidly inducing of the ageing character.

scholarly journals DEVELOPMENT OF NEW CRISPY BREADS WITH THE INCLUSION OF VEGETABLE ADDITIVES AND EVALUATION OF THEIR QUALITY

2018 ◽  
Vol 6 ◽  
pp. 18-25
Author(s):  
Maryna Mardar ◽  
Tetiana Bordun ◽  
Rafaela Znachek ◽  
Svitlana Vikul
Keyword(s):  
Control Sample ◽  
Chemical Properties ◽  
Herbal Supplements ◽  
Organoleptic Evaluation ◽  
Chemical Indicators ◽  
Organoleptic Characteristics ◽  
Physico Chemical ◽  
Mountain Ash ◽  
Tea Extract

Spelt-based crispy breads with the inclusion of herbal supplements (powders of milk thistle, mountain ash, wild rose and green tea extract) and the results of assessing the quality of new products by organoleptic and physico-chemical indicators are presented. For a tasting evaluation, a point scale has been developed for the organoleptic evaluation of sugary-grain crispy breads. On the basis of which the organoleptic analysis of crispy breads, enriched with herbal supplements, has been carried out It is established that the introduction of vegetable additives in the composition of crispy bread leads to an improvement in the organoleptic characteristics of finished products. These products are characterized by a crispy, porous structure, an attractive light cream color, a harmonious taste, a pronounced smell of used additives. According to the results of the tasting evaluation, samples enriched with herbal supplements received the highest score in relation to the control sample, which meets the requirements of potential consumers. On the basis of physico-chemical indicators, it has been established that the introduction of grain additives to crispy breads does not impair the physic-chemical properties of these products. On the basis of the obtained data, the expediency of the production of new spelt-based crispy breads with the inclusion of enriching additives with improved organoleptic properties is substantiated.

scholarly journals USE OF NON-TRADITIONAL RAW MATERIALS IN COLD SNACK TECHNOLOGY

2021 ◽  
Vol 295 (2) ◽  
pp. 239-244
Author(s):  
Artem ANTONENKO ◽  
◽  
Tetiana BROVENKO ◽  
Olena VASILENKO ◽  
Yuliia ZEMLINA ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Raw Materials ◽  
Daily Intake ◽  
Control Sample ◽  
Biologically Active ◽  
Nutrient Requirements ◽  
Organoleptic Evaluation ◽  
Dried Fruits ◽  
Organoleptic Characteristics ◽  
Sour Cream

The purpose of this research is to substantiate and develop the technology of vegetarian cold snacks “VegoShuba”. The object of the study is the technology of salad with the addition of nori leaves, Adyghe cheese, sour cream, asafetida and dried fruits “VegoShuba”. The article substantiates the expediency of using nori leaves, Adyghe cheese, vegetarian mayonnaise, chia seeds, asafetida and dried fruits (prunes and dried apricots) in the technology of vegetarian salad “VegoShuba”. On the basis of technological developments the technology of vegetarian salad “VegoShuba” is developed. The paper presents the results of research on quality indicators and calculates the chemical composition of the developed dish. During technological tests in the prototypes, herring was replaced with nori leaves, eggs – with Adygea cheese, mayonnaise – with sour cream with turmeric and black salt. The optimal amount of chia seeds, Adyghe cheese, asafetida and dried fruits was determined by organoleptic evaluation. After a study of organoleptic characteristics, it was determined that the highest organoleptic evaluation was obtained by experiment with the addition of chia seeds – 0.2 g, asafetida – 0.2 g, prunes – 3 g and dried apricots – 3 g. Analyzing the chemical composition of the vegetarian analogue of the classic dish “Herring under a fur coat” it is possible to observe considerable increase in the content of nutrients. Based on the analysis of the daily nutrient requirements of VegoShuba salad, there is an increase in the satisfaction of daily nutrient requirements, with the exception of vitamin B12. This dish can be recommended in the appropriate restaurants. Taking into account the research and calculations, a model of the quality of the developed dish was built, it reflects the percentage of nutrients in salads to the daily intake. Summarizing the results, we can conclude that the developed dish “VegoShuba” using nori leaves, Adyghe cheese, sour cream, chia seeds, asafetida and dried fruits in certain quantities have compared to the control sample increased biological value due to the variety of ingredients that have composition of biologically active substances and valuable nutrients, so it is a worthy alternative in vegetarian cuisine. The developed dish “VegoShuba” can be recommended for implementation in restaurants of Ukraine.

scholarly journals TECHNOLOGY OF GLUTEN-FREE GINGERBREADS FROMSESAME FLOUR

2021 ◽  
Vol 38 (2) ◽  
pp. 85-93
Author(s):  
MEDVEDIEVA Anzhelika ◽  
ANTONYUK Iryna ◽  
GRABOVSKA Olena
Keyword(s):  
Chemical Composition ◽  
Wheat Flour ◽  
Control Sample ◽  
Rice Flour ◽  
Gluten Free ◽  
Organoleptic Evaluation ◽  
Free Products ◽  
Complete Replacement ◽  
Organoleptic Parameters

Background. Flour confectionery in Ukraine is in high demand, it’s made gluten-free mainly using corn and rice flour, rarely buckwheat. In our opinion, an inte­resting alternative to these types of flour will be to use sesame flour in the recipe and technology of gingerbread products, due to its convenience and unique taste. We have not found any research on the use of sesame flour in the technologies of gingerbread flour confectionery in available sources. The aim of this research is to scientifically substantiate and develop the techno­logy of gluten-free gingerbread with a complete replacement of wheat with sesame flour. Materials and methods. The object of research is the technology of gingerbread using gluten-free finely ground sesame flour. As a control sample, high-grade wheat flour was used for the preparation of children’s gingerbread by custard. The quality of gingerbread is determined according to DSTU 4187:2003 (State Stan­dards of Ukraine). Organoleptic evaluation of the samples was performed on a 5-point scale. The calculation of nutritional value (proteins, lipids, carbohydrates, dietary fiber), and the content of minerals is carried out according to the tables of chemical composition. Results. With the help of test doughs, it was found that in the recipe of children’s gingerbread it is possible to completely replace wheat flour with sesame and "dry perfume" (a mixture of spices) with nutmeg. According to organoleptic parameters of two types of gingerbread from wheat and sesame flour, the latter were less porous, but had a pleasant rich taste of sesame and nutmeg aroma. As a result, the identified shortcomings do not have a significant impact on the overall quality of gluten-free products. The technological scheme of preparation of "Sesame" gingerbreads with the use of sesame flour and nutmeg has been developed. The chemical composition, mineral content and energy value of control and deve­loped gingerbreads were calculated. The latter had better nutritional and biological value. Conclusion. The technology of gingerbread dough and gingerbreads with the use of sesame flour and nutmeg has been developed, which improves the organoleptic and physicochemical parameters of the new "Sesame" gingerbreads, makes their taste more expressive and enriches them with useful microelements. By replacing wheat flour with sesame, the finished products do not contain gluten and can be recommended to certain categories of consumers who suffer from diseases associated with wheat protein intolerance and allergy to it.

scholarly journals The effect of cation exchange resin treatment of grape must on the chemical and sensory characteristics of base wines for sparkling wine

2019 ◽  
Vol 34 (2) ◽  
pp. 91-101 ◽  
Author(s):  
Bruno Cisilotto ◽  
Simone Bertazzo Rossato ◽  
Evandro Ficagna ◽  
Luísa Carolina Wetzstein ◽  
Angelo Gava ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Volatile Compounds ◽  
Exchange Resin ◽  
Control Sample ◽  
Cation Exchange Resin ◽  
Sparkling Wine ◽  
Wine Production ◽  
Grape Must ◽  
Organoleptic Characteristics ◽  
The Impact

Ion exchange resins are polymers with high physical and chemical stability, which, upon activation, acquire positive charge (H+) ions which interchange with existing cations during musts or wines treatment. The chemical composition of the grape must, and wines are highly affected by said modifications. This study aimed to evaluate the impact of the cationic resin treatments on the physicochemical and organoleptic characteristics of base white wines for sparkling wine production. Thus for, Chardonnay must was exposed to a cation exchange resin specific for oenological usage, and fermented to obtain wines. Resulting wines included an untreated control sample with pH 3.15 and treated samples with pH 3.08, 3.02 and 2.97. Physicochemical and volatile compounds analyses as well as quantitative sensory evaluations were conducted. The results showed that, on the scenarios tested, treatments with cationic resins before fermentation resulted in wine with higher oxidative stability, with significative variation on the concentration of several volatile compounds that influenced organoleptic perceptions.

scholarly journals STUDIES ON THE QUALITATIVE INDICATORS OF AFRICAN OSTRICH HAM WITH VEGETABLE ENZYMES

2020 ◽  
Vol 11 (4) ◽  
pp. 25-31
Author(s):  
V. M. Israelian ◽  
O. A. Shtonda
Keyword(s):  
Chemical Composition ◽  
Control Sample ◽  
Meat Products ◽  
Product Yield ◽  
Experimental Sample ◽  
Organoleptic Evaluation ◽  
Functional Additive ◽  
Organoleptic Characteristics ◽  
Composition Product ◽  
Salted Meat

Expanding the food products range is one of the most promising challenges in the food industry today. The production of whole meat products has always determined the technological level of the enterprise, reflecting its ability to improve consumer nutrition. Using the same type of raw meat, by changing the modes and conditions of its preparation, impact on the tissue structure, directional autolysis and variation of thermal processes, they produce products with different nutritional characteristics. Research of chemical composition has established that penetration of salting active substances into the meat fabrics and their interaction with proteins changes physical and chemical composition of a product, determining the basic properties of salted meat (swelling, consistence, viscosity, etc.). Change in meat proteins during salting is accompanied by an increase in bound moisture in the product and causes an increase in a product yield. The protein content in the control sample is 26.17 %, in the experimental samples № 1, 2 - 26,88 -27,64 % due to the introduction of a functional additive and plant enzyme papain, which has a positive effect on the taste of the developed semi-finished products and makes them more juicy. Organoleptic evaluation of products is important in determining the quality of meat products, since a person's reaction depends on the appearance, color, smell, taste, consistency of the finished product. It has been established that organoleptic characteristics of meat products vary depending on the chemical composition, product, degree of biochemical changes (meat maturation), technological processing (cooking, smoking, etc.), the use of spices, food and flavorings. Results of the study on the organoleptic parameters show that the use of the enzyme papain improves the taste and aroma, as the experimental sample differs from the control one with increased juiciness and tenderness, without foreign odors and tastes.

DETERMINATION OF QUALITY OF SURFACE IN HOME CONDITIONS

2020 ◽  
Vol 36 (2) ◽  
pp. 93-101
Author(s):  
G.A. Irgalina ◽  
Keyword(s):  
Chemical Reaction ◽  
Regulatory Document ◽  
Organoleptic Evaluation ◽  
Organoleptic Characteristics ◽  
Small Grains ◽  
Sour Cream ◽  
Taste And Smell ◽  
Home Conditions

The article reflects the assessment of the quality of sour cream at home, and considers methods for determining the quality of sour cream. Organoleptic evaluation was performed for compliance with the requirements of GOST 52092-2003 " Smetana. Technical conditions " in terms of appearance, consistency, color, taste and smell. The consistency of sour cream is determined during its mixing, while evaluating the presence of a glossy appearance of sour cream. Sour cream is considered thick if it slowly drains from the whorl. The smell is determined immediately after mixing. Then we evaluate the taste. When evaluating the quality of the samples under study, it was found that the organoleptic characteristics of the samples fully comply with the requirements of the regulatory document. Analyzing the results of the experiment, we can conclude that in the first experiment, the sour cream purchased on the market was completely dissolved, and the sour cream from the store after dissolution showed small grains. And in the second experiment, the results showed that the color did not change in the sample # 2, but under # 1 it turned blue. The basis of this experiment is a qualitative chemical reaction to starch, which is used as a thickener.

scholarly journals Determination of the Chemical Composition of Tea by Chromatographic Methods: A Review

2015 ◽  
Vol 4 (3) ◽  
pp. 56 ◽  
Author(s):  
Alexandr Ya Yashin ◽  
Boris V. Nemzer ◽  
Emilie Combet ◽  
Yakov I. Yashin
Keyword(s):  
Chemical Composition ◽  
Volatile Compounds ◽  
Black Tea ◽  
Storage Conditions ◽  
Organoleptic Evaluation ◽  
Chromatographic Methods ◽  
Tea Quality ◽  
Processing And Storage ◽  
And Storage

<p>Despite the fact that mankind has been drinking tea for more than 5000 years, its chemical composition has been studied only in recent decades. These studies are primarily carried out using chromatographic methods. This review summarizes the latest information regarding the chemical composition of different tea grades by different chromatographic methods, which has not previously been reviewed in the same scope. Over the last 40 years, the qualitative and quantitative analyses of high volatile compounds were determined by GC and GC/MS. The main components responsible for aroma of green and black tea were revealed, and the low volatile compounds basically were determined by HPLC and LC/MS methods. Most studies focusing on the determination of catechins and caffeine in various teas (green, oolong, black and pu-erh) involved HPLC analysis.</p> <p>Knowledge of tea chemical composition helps in assessing its quality on the one hand, and helps to monitor and manage its growing, processing, and storage conditions on the other. In particular, this knowledge has enabled to establish the relationships between the chemical composition of tea and its properties by identifying the tea constituents which determine its aroma and taste. Therefore, assessment of tea quality does not only rely on subjective organoleptic evaluation, but also on objective physical and chemical methods, with extra determination of tea components most beneficial to human health. With this knowledge, the nutritional value of tea may be increased, and tea quality improved by providing via optimization of the growing, processing, and storage conditions.</p>

RESEARCH OF THE RED GRAPES WHICH ARE GROWN UP IN THE SAMARA REGION FOR THE PRODUCTION OF THE WINEMAKING MATERIALS

2021 ◽  
Author(s):  
П.А. ЧАЛДАЕВ ◽  
Е.Н. ФЕДОРОВА ◽  
А.Г. КАШАЕВ
Keyword(s):  
Wine Yeast ◽  
Color Characteristic ◽  
Field Of Study ◽  
Wine Production ◽  
Wine Making ◽  
Red Grapes ◽  
Chemical Indicators ◽  
Phenolic Substances ◽  
Physical And Chemical

Изучена возможность использования для производства винодельческой продукции винограда, выращиваемого в Самарской области. Исследованы два технических сорта красного винограда урожаев 2015–2016 гг. – Ливадийский черный и Мерло. Качество винограда соответствовало требованиям ГОСТ 31782–2012. Переработку винограда по красному способу вели в полупромышленных условиях. Брожение проводили на мезге с плавающей шапкой. Для сбраживания виноградной мезги использовали сухие французские винные дрожжи Sainte Georges S101. Температура бродящей мезги не превышала 28–30°С. Дображивание полученных виноматериалов и последующую их выдержку осуществляли при температуре (14 ± 1)°С. В результате получены сухие столовые виноматериалы. Показатели качества полученных виноматериалов удовлетворяют требованиям ГОСТ 32030–2013 по всем основным физико-химическим показателям качества и характеризуются достаточно высоким содержанием фенольных веществ. Виноматериалы имели насыщенный рубиновый цвет, характерные сортовые вкус и аромат. Полученные результаты подтверждают целесообразность проведения дальнейших исследований в области обоснования и разработки технологий получения винодельческой продукции в Самарском регионе. The possibility of use for production of wine-making production of the grapes which are grown up in the Samara region is studied. Two technical grades of red grapes of harvests of 2015–2016 Livadia black and Merlots are investigated. The quality of the grapes meets the requirements of GOST 31782–2012. Grapes processed by red method in semi-conditions. Fermentation was carried out on pulp with a floating cap. Dry wine yeast “Sainte Georges S101” (Fermentis, France) were used for fermentation of grape pulp. The temperature of the fermenting pulp did not exceed 28–30°C. After-fermentation of the received wine materials and the subsequent their endurance was carried out at a temperature of (14 ± 1)°C. Dry table wine materials are as a result received. The resulting wine materials meet the requirements of GOST 32030–2013 in all basic physical and chemical indicators of quality and characterized by a rather high content of phenolic substances. Wine materials had a rich ruby color, characteristic varietal taste and aroma. These results confirm the usefulness of further research in the field of study and the development of technologies for the production of wine production in the Samara region.

scholarly journals Development of organic acids and volatile compounds in cider during malolactic fermentation

2014 ◽  
Vol 32 (No. 1) ◽  
pp. 69-76 ◽  
Author(s):  
H. Zhao ◽  
F. Zhou ◽  
P. Dziugan ◽  
Y. Yao ◽  
J. Zhang ◽  
...  
Keyword(s):  
Organic Acids ◽  
Volatile Compounds ◽  
Carbonyl Compounds ◽  
Alcoholic Fermentation ◽  
Total Concentration ◽  
Malolactic Fermentation ◽  
High Concentration ◽  
Volatile Acidity ◽  
Organoleptic Characteristics

The effect of malolactic fermentation (MLF) on the flavour quality of cider was examined. Leuconostoc mesenteroides subsp. mesenteroides Z25 was used to start MLF taking place at 25&deg;C for 12 days after the completion of alcoholic fermentation (AF) by Saccharomyces cerevisiae. Strain Z25 showed good activity in starting MLF of cider with 10% alcoholic concentration. The content of malic acid, whose high concentration gives negative organoleptic characteristics to the cider, dropped significantly from 4.0 g/l to 0.25 g/l via MLF. The concentration of lactic acid increased significantly from 0.99 g/l to 3.50 g/l, contributing to volatile acidity. The acetic acid content of the ciders was 0.74 g/l. Among 51 volatile compounds detected by GC-MS, higher alcohols, esters, and carbonyl compounds were formed in ciders through MLF. The total concentration of aromatic substances doubled compared to the controls. The occurrence of MLF started by strain Z25 enabled the cider containing more volatile compounds and an acceptable adjustment of organic acids. This is the first report on using L. mesenteroides subsp. mesenteroides strain Z25 to start the MLF of apple wine improving the flavour quality of the cider produced. &nbsp;

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