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 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 Effect of energy concentration in the diets on sensorial and chemical parameters of Morada Nova, Santa Inez and Santa Inez x Dorper lamb meat

2010 ◽  
Vol 39 (9) ◽  
pp. 2017-2023 ◽  
Author(s):  
Ana Sancha Malveira Batista ◽  
Roberto Germano Costa ◽  
Déborah dos Santos Garruti ◽  
Marta Suely Madruga ◽  
Rita de Cássia Ramos do Egypto Queiroga ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Shear Force ◽  
Energy Concentration ◽  
Average Weight ◽  
Chemical Quality ◽  
Chemical Parameters ◽  
Lamb Meat ◽  
Sensorial Attributes ◽  
Water Holding

The objective of this study was to investigate the influence of genotype and the energy concentration in the diet on the sensorial and chemical quality of lamb meat. It was evaluated samples from 18 Morada Nova animals, 18 Santa Inez animals, and 18 Santa Inez x Dorper crossbred animals, totalizing 54 animals. The animals were kept with two diets, with energy concentrations of 10.46 and 12.56 MJ ME/kg, respectively, and slaughtered at 30 kg average weight. It was determined contents of protein, moisture, fat and ash, as well as cooking loss, water-holding capacity, shear force, and sensorial attributes of flavour, firmness and juiciness of the meat. Genotype influenced the chemical composition of lamb meat because animals of Morada Nova breed presented the highest moisture content, and Santa Inez x Dorper crossbred showed the highest protein percentage; however, there was no variation in the sensorial attributes of lamb meat of these three genotypes. The diet with the highest energy concentration provides meat with higher juiciness.

400. Factors influencing the keeping quality of ghee

1949 ◽  
Vol 16 (3) ◽  
pp. 356-362 ◽  
Author(s):  
D. P. Persai ◽  
C. R. Barnicoat
Keyword(s):  
Heat Treatment ◽  
Bacterial Culture ◽  
Storage Life ◽  
Summer Temperature ◽  
Final Temperature ◽  
Marked Influence ◽  
Factors Influencing ◽  
Keeping Quality ◽  
Main Factors

Of the four main factors commonly regarded as influencing keeping properties of ghee, viz. moisture content, acidity, heat treatment and type of bacterial culture used in souring, the heat treatment was found to be the most important.In general, the higher the final temperature (110° C. and higher) attained during evaporation, the better were the keeping properties of the product, providing that the butter had been heated in contact with curd, boiled as rapidly as possible, and given a minimum amount of stirring.The improved keeping properties conferred on ghee heated to 110–150° C. were promoted by antioxidants (apparently phospholipids) extracted from the curd during cooking.Initial acidity and moisture contents had no effect on storage life of ghee at 38° C., and the practice of grading ghee according to its acidity would appear to be of questionable value. Souring of milk to give 2·5–3·0% lactic acid and the accompanying desirable flavour did not detract from the keeping quality of the ghee made from it.The type of bacterial culture used for souring had only slight influence on keeping quality of ghee, but a marked influence on flavour.Storage life of ghee at 38° C. (‘Indian summer temperature’) could be predicted with fair accuracy from its rate of oxidation at 100° C. in a ‘Swift oxidation tester’.

scholarly journals Determination of the comprehensive indicator of pastille with the use of multi-component fruit-berry paste

2021 ◽  
Vol 3 (3(59)) ◽  
pp. 46-49
Author(s):  
Kateryna Kasabova ◽  
Nataliа Shmatchenko ◽  
Aleksey Zagorulko ◽  
Andreii Zahorulko
Keyword(s):  
Ascorbic Acid ◽  
Chemical Composition ◽  
Raw Materials ◽  
Control Sample ◽  
Comprehensive Assessment ◽  
Biologically Active ◽  
Human Need ◽  
Pectin Substances

The object of research in this work is the technology of pastille with the addition of multicomponent fruit and berry paste. Pastille are becoming more and more popular in the world for all segments of the population. Usually, the main ingredients for their manufacture are fruit raw materials, a structurant and egg white, therefore, the products contain practically no fat and have a low calorie content. It is proposed to replace 75 % of traditional applesauce in the recipe with a multicomponent fruit and berry paste made from apples, cranberries, hawthorn. It was found that such a composition makes it possible to obtain products with an increased content of pectin substances, ascorbic acid, polyphenols, including anthocyanins, catechins and flavonols. The work is aimed at studying the application of the principles of qualimetry to determine a complex indicator of the quality of pastille For this, the organoleptic and physicochemical indicators of the quality of the developed pastille were taken from previous studies and the chemical composition was determined and the content of biologically active substances was calculated relative to the average daily human need. The content of pectin substances in new products increases 1.7 times and satisfies the average daily human need by 18.2 %. The content of ascorbic acid is 4.2 times higher, which is 20.5 % of the average daily human need, and polyphenols 3.2 times higher – 579.0 %. The data obtained make it possible to consider the developed product functional. The next step was to determine the complex indicator of products by the qualimetric method. For a more complete disclosure of product properties, a structure of pastille quality indicators has been developed – a «tree of properties». Thus, the comprehensive assessment of the quality of the control sample corresponds to the indicator «good» (0.66), while the integrated assessment of pastille with multicomponent paste corresponds to the indicator «very good» (0.98). On the basis of organoleptic, physicochemical indicators and chemical composition of products, it was established that the indicator of a comprehensive assessment of the quality of a pastille with a multicomponent paste, taking into account all group indicators, is 48 % higher compared to the control.

scholarly journals Heat Processing and Change of Proper Indicators of Basalts

Land Science ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. p1
Author(s):  
Rashidova R K ◽  
Kurbanov Abdirakhim Ahmedovich ◽  
Aliyev T ◽  
Jiyanov A B ◽  
Turdieva O J ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Chemical Composition ◽  
Raw Materials ◽  
Practical Interest ◽  
Heat Processing ◽  
High Quality ◽  
Mineral Raw Materials ◽  
Different Color ◽  
Basalt Rock

This paper presents the results of the analysis of the quality of basalts, their heat treatment and studies of changes in the chemical composition of basalts, which leads to a change in the external color of partially processed basalt raw materials (hereinafter referred to as semi-finished product). The results of a study of purified basalt from slime, impurities and hydroxides, changes in the chemical composition of basalt rock are presented. The prospects of heat treatment of a semi-finished product and obtaining multi-colored products from mineral raw materials is shown. It was found that the optimal firing temperature of the semi-finished product, the possible options for changing the external color and the criterion points of the thermal effect at which the basalt semi-finished product changes the external shade. These statements are of great scientific and practical interest in the fact that during the heat treatment of a semifinished product, basalt easily overheats and gradually acquires a different color, which occurs to a liquids temperature and allows the future to plan to obtain high-quality multi-colored products from basalts, for example, products for design.

scholarly journals Fresh Basil Infusion: Effect of Sous-Vide Heat Treatment on Their Volatile Composition Profile, Sensory Profile, and Color

Molecules ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 5
Author(s):  
Artur Głuchowski ◽  
Ewa Czarniecka-Skubina ◽  
Krzysztof Tambor ◽  
Elvyra Jariené
Keyword(s):  
Heat Treatment ◽  
Volatile Compounds ◽  
Sensory Profile ◽  
Pronounced Change ◽  
Headspace Volatile ◽  
Different Temperatures ◽  
Sous Vide ◽  
Cie Lab ◽  
Area Percentage

Herbs, including basil, are used to enhance the flavor of food products around the world. Its potential is influenced by the quality of fresh herbs and processing practices, wherein conditions of heat treatment play an important role. The aim of the research was to determine the effect of sous-vide heat treatment on the volatile compounds profile, sensory quality, and color of basil infusions. The material used for research was aqueous basil infusion prepared conventionally at 100 °C, and using the sous-vide method (65, 75, and 85 °C). The composition of volatile compounds was identified by GC/MS analysis, the sensory profile was assessed using a group of trained panelists, while the color was instrumentally assessed in the CIE Lab system. No significant differences were found in the intensity of the taste and aroma of basil infusions at different temperatures. Seventy headspace volatile compounds were identified in the analyzed samples, ten of which exceeded 2% of relative area percentage. The most abundant compounds were eucalyptol (27.1%), trans-ocimene (11.0%), β-linalool (9.2%), and β-myrcene (6.7%). Most of the identified compounds belonged to the terpenes and alcohols groups. Our findings show that the conventional herbal infusion was more like a sous-vide infusion prepared at the lowest temperature SV65, while SV75 and SV85 were similar to each other but different from the conventional. However, a smaller number of volatile compounds in the samples heated at higher temperatures of sous-vide were identified. The sous-vide samples showed a higher content of alkanes. The sous-vide method (p ≤ 0.05) resulted in darker, less green, and less yellow basil leaves than fresh and traditionally steeped ones. Long heat treatment under vacuum at higher temperatures causes a pronounced change in the aroma composition.

scholarly journals The Quality of Ecologically and Conventionally Grown White and Brown Agaricus bisporus Mushrooms

2020 ◽  
Vol 12 (15) ◽  
pp. 6187 ◽  
Author(s):  
Aurelija Paulauskienė ◽  
Živilė Tarasevičienė ◽  
Daiva Šileikienė ◽  
Laima Česonienė
Keyword(s):  
Ascorbic Acid ◽  
Chemical Composition ◽  
Electrochemical Properties ◽  
Volatile Compounds ◽  
Agaricus Bisporus ◽  
Crude Protein ◽  
Ph Value ◽  
Biologically Active ◽  
Positive Effect

Agaricus bisporus is a rich source of biologically active compounds with functional properties that have a positive effect on human health. White and brown A. bisporus mushrooms were grown both organically and conventionally. This study aimed to analyze chemical composition of the mushrooms, their electrochemical properties, and the composition of volatile compounds. The relationships between cultivation practices and the basic chemical composition, electrochemical properties, and aroma compounds of A. bisporus were examined. The results reveal that ecologically grown mushrooms accumulated higher amounts of ascorbic acid while conventionally grown mushrooms accumulated more crude protein and zinc. More substantial amounts of dry matter, crude protein, and crude ash were found in the brown mushrooms. The white mushrooms had a higher content of ascorbic acid, crude fat, and dietary fiber. Ten volatile compounds were tentatively identified in analyzed mushrooms, including five aldehydes, two esters, two alcohols, and one terpene. Conventionally grown mushrooms had a higher pH value, but eco mushrooms had significantly lower redox potential. White mushrooms had lower p-values than brown mushrooms. Eco mushrooms could not be distinguished by their qualitative characteristics. The chemical composition of white and brown mushrooms was somewhat different, and only the electrochemical properties of mushrooms differed significantly.

OPTIMIZATION OF INULIN CONTENT IN THE FORMULATION OF SOFT WAFERS ON BASED WHEAT FIBER

2020 ◽  
Author(s):  
Р.З. СХАШОК ◽  
Ю.Н. ФИЛИППЕНКО ◽  
Н.А. ТАРАСЕНКО
Keyword(s):  
Dietary Fiber ◽  
Quality Indicators ◽  
Control Sample ◽  
Chemical Parameters ◽  
Organoleptic Evaluation ◽  
Physical And Chemical Parameters ◽  
Quality Of Products ◽  
Physical And Chemical ◽  
Optimal Quality

Исследовано влияние инулина, внесенного в рецептуру мягких вафель взамен части сахара, на качество изделий. Раствор инулина Beneo (Orafti) GR вносили в тесто в количестве 3, 5 и 7% к массе муки. Контролем был образец мягких вафель без добавки инулина. Одновременно с инулином во все образцы вносили пшеничные пищевые волокна Камецель FW 200 в количестве 15% к массе муки. На основе исследования физико-химических показателей влажности и плотности тестовых заготовок, а после их выпечки – намокаемости и влажности готовых изделий установлено, что оптимальные показатели качества имел образец мягких вафель с 5-процентным содержанием инулина. По разработанной рецептуре изготовлены мягкие вафли с добавкой пшеничных волокон и установленным количеством инулина. Проведена органолептическая оценка изделий, определено содержание основных пищевых веществ. Установлено, что мягкие вафли, в рецептуру которых внесены пшеничные волокна Камецель FW 200 и инулин Beneo (Orafti) GR, дольше сохраняют свежесть, содержат на 15% меньше жира, на 6% больше белка и на 8% менее калорийны по сравнению с контрольным образцом. The effect of inulin added to the formulation of soft wafers instead of sugar on the quality of products was studied. Beneo (Orafti) GR inulin solution was added to the dough in an amount of 3, 5 and 7% by weight of flour. A sample of soft wafers without inulin supplementation was a control. Wheat dietary fiber Kametsel FW 200 in an amount of 15% by weight of flour was added simultaneously with inulin to all samples. On the basis on the study of physical and chemical parameters of humidity and density of test blanks, and after baking-wetness and humidity of finished products, it was found that a sample of soft wafers with 5% inulin content had optimal quality indicators. According to the developed recipe, soft wafers with the addition of wheat fibers and a set amount of inulin are made. Organoleptic evaluation of products was carried out, the content of the main food substances was determined. It was found that soft wafers with wheat fiber Kamenzel FW 200 and inulin Beneo (Orafti) GR added to the recipe retain freshness longer, contain 15% less fat, 6% more protein and 8% less calories compared to the control sample.

Chemical analysis of flavour volatiles in heat-treated milks

1978 ◽  
Vol 45 (3) ◽  
pp. 391-403 ◽  
Author(s):  
Haytham A. Jaddou ◽  
John A. Pavey ◽  
Donald J. Manning
Keyword(s):  
Mass Spectrometry ◽  
Heat Treatment ◽  
Molecular Weight ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Volatile Compounds ◽  
Raw Milk ◽  
Low Molecular Weight ◽  
Total Volatile ◽  
Heat Treated

SummaryThe effect of heat treatment of milk on low molecular weight, volatile compounds was studied in order to relate changes in the flavour of milks to changes in chemical composition. Milks were heat treated in a UHT plant for 3 or 90 s at 140 °C and stored at ambient temperature for periods up to 112 d. Volatile compounds in raw milk and in heated milks were isolated by a low temperature spray distillation technique and identified using gas chromatography and mass spectrometry. Cabbagey defects in heated milks are correlated with total volatile sulphur and it is concluded that the compounds H2S, COS, CH3SH, CS2 and (CH3)2S could be responsible for this defect.

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