scholarly journals A Comparative Study on Physicochemical and Rheological Properties of Imported Tomato Paste in Nigeria

2012 ◽  
Vol 1 (2) ◽  
pp. 51 ◽  
Author(s):  
Sobowale S. S. ◽  
Olatidoye O. P. ◽  
Odunmbaku L. A. ◽  
Raji O. H.
Keyword(s):  
Chemical Composition ◽  
Physicochemical Properties ◽  
Raw Materials ◽  
Color Measurement ◽  
Flow Index ◽  
Processing Conditions ◽  
Consistency Test ◽  
Tomato Paste ◽  
Power Law Equation ◽  
Measurement Consistency

<p>This study was carried out to evaluate the physicochemical properties and rheological behavior of a number of tomato pastes imported by Nigeria food marketers. Chemical composition, color measurement, consistency, viscometry and flow index were determined. There were significant differences among the samples and some of the parameters did not meet the standard requirements set by food drug and administration of (FDA). The viscometry consistency test and flow index at 30<sup> o</sup>C, 45<sup> o</sup>C and 60<sup> o</sup>C indicated the existence of variations among the samples in terms of viscosity and flow index increase as temperature increases. All tomato paste samples in the study were non-Newtonian fluids and the apparent viscosity of the paste decreased with temperature increase. The rheological data obtained were fitted using power law equation. The differences obtained were attributed to raw materials variation and processing conditions.</p>

A Comparative Study of Physicochemical and Rheological Properties of Iranian Tomato Pastes

2010 ◽  
Vol 6 (1) ◽  
Author(s):  
Asgar Farahnaky ◽  
Marjan Majdinasab ◽  
Mahsa Majzoobi ◽  
Gholamreza Mesbahi
Keyword(s):  
Shear Stress ◽  
Apparent Viscosity ◽  
Raw Material ◽  
Color Measurement ◽  
Processing Conditions ◽  
Tomato Paste ◽  
Rotational Viscometry ◽  
Salt Level ◽  
Power Law Equation ◽  
Measurement Consistency

In this study, the physicochemical properties and rheological behavior of a number of tomato pastes manufactured by Iranian food processors were compared. Chemical composition tests, color measurement, consistency and rotational viscometry were performed. There were significant differences among the samples in terms of Brix, salt level, vitamin C and Hunter color parameters (L and a/b). Some of the parameters did not pass the standard requirements set by the Institute of Standards and Industrial Research of Iran (ISIRI), e.g. Brix, color and salt. The rotational viscometry tests and shear stress–shear rate curves at 30, 45 and 60°C indicated the existence of variations among the samples in terms of apparent viscosity and yield stress. All tomato paste samples in this study were non-Newtonian fluids and the apparent viscosity of the pastes decreased with temperature increase. The rheological data obtained were fitted using a Power Law equation. The differences were attributed to raw material variations and processing conditions.

INFLUENCE OF VEGETABLE RAW MATERIALS AND CO2 EXTRACTS OF SPICES ON COMMODITY RESEARCH CHARACTERISTICS OF THE SAUCES ON WHEY BASED

2019 ◽  
Author(s):  
Л.Н. ШУБИНА ◽  
Г.И. КАСЬЯНОВ ◽  
О.В. КОСЕНКО ◽  
А.А. ЗАПОРОЖСКИЙ ◽  
С.В. БЕЛОУСОВА ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Nutritional Value ◽  
Optimization Problem ◽  
Raw Materials ◽  
New Product ◽  
Organoleptic Evaluation ◽  
Tomato Paste ◽  
Organoleptic Characteristics ◽  
Vegetable Raw Materials ◽  
Three Factor

Проведено конструирование рецептуры соусов на основе творожной сыворотки к мясным и рыбным блюдам. Разработана рецептура пикантных соусов с использованием творожной сыворотки, овощного сырья и СО2-экстрактов пряностей. Сбалансированность рецептурного состава новых пищевых продуктов достигнута симплекс-методом. Оптимизационная задача решена по органолептическим показателям, химическому составу и энергетической ценности продукта. Для моделирования рецептур использовали трехфакторные симплекс-центроидные планы. Согласно матрице планирования приготовлены образцы смесей, содержащие в качестве постоянной части творожную сыворотку (43%); оставшуюся вариативную часть составили, %: пшеничные хлопья 13,0; томатная паста 34,4; растительное масло 2,3; соль 3,0; сахар 3,0; уксус столовый 1,0; хитозан 0,2; СО2-экстракты 0,004. Образцы с различным соотношением компонентов получили высокую органолептическую оценку по 5-балльной дегустационной шкале. Пищевая ценность разработанного соуса 116,6 ккал – выше классического томатного (95 ккал), ниже майонеза (510 ккал/100 г), что позволяет рекомендовать новый продукт для диетического питания. The formulation of sauces based on curd whey for meat and fish dishes was designed. The formulation of spicy sauces using curd whey, vegetable raw materials and СО2-extracts of spices was developed. The balance of the formulation composition of new foods is achieved by simplex method. The optimization problem is solved on organoleptic characteristics, chemical composition and energy value of the product. Three-factor simplex-centroid plans were used to model formulations. According to the planning matrix prepared samples of mixtures containing as a permanent part of the whey (43%); the remaining variable part was, %: wheat flakes 13,0; tomato paste 34,4; vegetable oil 2,3; salt 3,0; sugar 3,0; vinegar table 1,0; chitosan 0,2; СО2-extracts 0,004. Samples with different ratios of components received high organoleptic evaluation by five-points tasting scale of assessments. The nutritional value of the developed sauce 116,6 kcal – above the classic tomato sauce (95 kcal), below mayonnaise (510 kcal/100 g), which allows us to recommend a new product for dietary nutrition.

scholarly journals STUDY OF THE KINETICS OF HYDRATION STRUCTURING AND THE PROPERTIES OF LIME-BELITIC BINDERS BASED OF MARL

Vestnik MGSU ◽  
2016 ◽  
pp. 62-68
Author(s):  
Aleksey Dmitrievich Zhukov ◽  
Marat Orynbaevich Asamatdinov ◽  
Bakhtiyar Chimbergenovich Nurymbetov ◽  
Sharibay Nauryzbaevich Turemuratov
Keyword(s):  
Chemical Composition ◽  
Low Temperature ◽  
Physicochemical Properties ◽  
Calcium Oxide ◽  
Raw Materials ◽  
High Strength ◽  
Dicalcium Silicate ◽  
Different Types ◽  
Materials Used ◽  
Kinetics Of

Lime-belite binder is obtained by low-temperature firing of natural marl, marling or sanding limestone and artificial lime-silica mixtures. The binder with calcium oxide also contains significant amounts of dicalcium silicate and some others materials, the composition and quantity of which depend on the chemical composition and firing temperature of the raw materials used. The authors investigated the kinetics of hydration structures and physicochemical properties of lime-based binders on the basis of belitic marl from Akburly and Porlytau. The formation of resistance is associated not only with the formation of the system of different types of structures - coagulation and crystallization, with the transition of the first to the second, but also with the different stages of formation of crystal structures. The possibility of using lime-belitic binders for the preparation of high-strength products of autoclave hardening is proved. The autoclaved binders used in the manufacture of sand-lime products are prepared with the use of mixtures consisting of 60...70 % lime-belite binder and 30...40 % ground quartz sand.

scholarly journals Development of the technology of production of cheese ‘Suluguni’ for farms

2021 ◽  
Vol 935 (1) ◽  
pp. 012047
Author(s):  
G Larionov ◽  
O Kayukovab ◽  
V Semenov
Keyword(s):  
Chemical Composition ◽  
Physicochemical Properties ◽  
Protein Content ◽  
Mass Fraction ◽  
Thermomechanical Processing ◽  
Raw Materials ◽  
Ultrasonic Method ◽  
Grain Drying ◽  
Technology Of Production ◽  
Microbiological Indicators

Abstract The aim of the research is the development of a technology for the production of ‘Suluguni’ cheese for farms from milk of cows. Investigations of the chemical composition and physicochemical properties of cows’ milk were carried out using by ultrasonic method. It was found that the mass fraction of protein in milk is 3.19±0.02%, fat is from 4.32±0.06% to 5.07±0.08%. For the production of cheese, milk was standardized. The protein content in normalized milk is 3.37±0.02%, fat - 2.84±0.03%. The ratio of the mass fraction of protein and fat in normalized milk was 1.00:1.19. It was found that the milk of cows meets the requirements for raw materials for the production of cheese. We have developed a technology for the production of brine cheese ‘Suluguni’, which consists of the following operations: receiving milk, preparing milk for making cheese, fermenting, curdling and processing the curd, setting grain, drying, cheddaring, melting, forming a cheese head, salting, storing, transportation and sale of products. Cheese meets the requirements for organoleptic, physicochemical and microbiological indicators. The research results make it possible to recommend to farms the technology for the production of ‘Suluguni’ cheese with cheddaring and thermomechanical processing of the cheese mass.

BÖHLER W403 VMR

Alloy Digest ◽  
2013 ◽  
Vol 62 (9) ◽  
Keyword(s):  
Heat Treatment ◽  
Chemical Composition ◽  
Physical Properties ◽  
Tool Steel ◽  
Raw Materials ◽  
Heat Treating ◽  
Diffusion Annealing ◽  
Selection Of

Abstract Böhler (or Boehler) W403 VMR is a tool steel with outstanding properties, based not only on a modified chemical composition, but on the selection of highly clean raw materials for melting, remelting under vacuum (VMF), optimized diffusion annealing, and a special heat treatment. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on forming and heat treating. Filing Code: TS-721. Producer or source: Böhler Edelstahl GmbH.

Natural radionuclides 238U, 226RA, AND 222RN in the surface water of the ELKONSKY uranium-ore district (South Yakutiya)

2019 ◽  
Vol 46 (6) ◽  
pp. 613-620
Author(s):  
A. P. Chevychelov ◽  
P. I. Sobakin ◽  
L. I. Kuznetsova
Keyword(s):  
Chemical Composition ◽  
Surface Water ◽  
20Th Century ◽  
Radioactive Contamination ◽  
Raw Materials ◽  
Natural Radionuclides ◽  
Water Migration ◽  
Uranium Ore ◽  
Wide Scale ◽  
Ore District

Chemical composition of the surface water and the contents of the radionuclides 238U, 226Ra, and 222Rn in water was examined within the natural and man-made landscapes of South Yakutiya. It was demonstrated that intense water migration of these radionuclides from radioactive dump pits of the man-made landscapes of the Elkonsky uranium-ore district, which were created during the process of wide-scale exploration surveys for radioactive raw materials conducted during the last third of the 20th century, had occurred. Currently, the areas of water dissipation of 238U and 226Ra are detected at a distances of 2 km and greater from the source of the radioactive contamination along the outflow vector.

scholarly journals Variability in chemical composition and antimicrobial activity of essential oil of Rosa × damascena Herrm. from mountainous regions of Iran

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Mansureh Ghavam ◽  
Afsaneh Afzali ◽  
Maria Manconi ◽  
Gianluigi Bacchetta ◽  
Maria Letizia Manca
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Environmental Conditions ◽  
Raw Materials ◽  
Rosa Damascena ◽  
Mountainous Regions ◽  
Aspergillus Brasiliensis ◽  
Suitable Area

Abstract Background Essential oil of Rosa × damascena Herrm. is one of the most valuable and important raw materials for the flavor and fragrance industry. The cultivation of this plant has ancient origins, and Kashan was one of the first mountainous regions of Iran dealing with the cultivation of R. × damascena. In this study, both chemical composition and antimicrobial activity of different rose essential oils obtained from five mountainous areas of Kashan region (Maragh, Qamsar, Sadeh, Javinan, and Kamoo) has been investigated along with the influence of the environmental conditions on these properties. Results Results showed that yield and chemical composition of essential oils obtained from Rosa × damascena were significantly affected by the collection area. In particular, the yield of oils varied from ~0.08 to ~0.132% and citronellol (36.70-9.18%), geraniol (12.82-0.47%), nonadecane (22.73-10.36%), heneicosane (31.7-11.43%), and 1-nonadecene (6.03-3.93%) have been detected as main compounds in all the plants collected, but at different concentrations depending on the collection area. The best fragrance and the highest yield were found in the oil from Kamoo area. Similarly to the chemical composition, the antimicrobial activity of the essential oils was affected by their origin, and essential oil obtained from plants collected from Kamoo area disclosed the highest antibacterial and antifungal efficacy. Its inhibition halos were 17.33±0.58 mm against Aspergillus brasiliensis, 15.67±0.58 mm against Staphylococcus aureus, and 12.33±0. 58 mm against Streptococcus pyogenes. Essential oils of R. damascena were also effective against Gram-negative Pseudomonas aeruginosa and they had a MIC value of 62.50 μg/mL irrespective of the collection area (except the oil from Javinan area). On the contrary, the highest antifungal power against Candida albicans yeast was reached using the essential oil obtained from plants collected in Javinan region (MIC and MBC ~62.50 μg/mL). Conclusions Overall results underline the influence of environmental conditions of the different areas of Kashan region, on the chemical composition of and antimicrobial activity of the essential oils of Rosa × damascena. In addition, results disclosed that Kamoo seemed to be the most suitable area for the competitive cultivation of R. × damascena to the intensive production of aromatic flower oil and natural antimicrobial essential oils.

scholarly journals Changes of Physicochemical Properties of Starch Syrups Recommended for Winter Feeding of Honeybees during Storage

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 374
Author(s):  
Teresa Szczęsna ◽  
Ewa Waś ◽  
Piotr Semkiw ◽  
Piotr Skubida ◽  
Katarzyna Jaśkiewicz ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Physicochemical Properties ◽  
Physicochemical Parameters ◽  
Storage Temperature ◽  
Storage Conditions ◽  
Different Temperatures ◽  
And Storage ◽  
Bee Colonies ◽  
Temperature Time ◽  
Winter Feeding

The aim of this study was to determine the influence of storage temperature and time on physicochemical parameters of starch syrups recommended for the winter feeding of bee colonies. The studies included commercially available three starch syrups and an inverted saccharose syrup that were stored at different temperatures: ca. 20 °C, 10–14 °C, and ca. 4 °C. Physicochemical parameters of fresh syrups (immediately after purchase) and syrups after 3, 6, 9, 12, 15, 18, 21, and 24 months of storage at the abovementioned temperatures were measured. It was observed that the rate of unfavorable changes in chemical composition of starch syrups and the inverted saccharose syrup, mainly the changes in the 5-hydroxymethylfurfural (HMF) content, depended on the type of a syrup and storage conditions (temperature, time). Properties of tested starch syrups intended for winter feeding of bees stored at ca. 20 °C maintained unchanged for up to 6 months, whereas the same syrups stored at lower temperatures (10–14 °C) maintained unchanged physicochemical parameters for about 12 months. In higher temperatures, the HMF content increased. To date, the influence of this compound on bees has not been thoroughly investigated.

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