scholarly journals ECONOMIC AND BIOLOGICAL FEATURES AND CHEMICAL COMPOSITION OF SKELETAL MUSCLES OF PIKE GROWN IN FARMS OF DIFFERENT FISH-BREEDING ZONES

2018 ◽  
pp. 132-138
Author(s):  
Aleksandra Aleksandrovna Payuta ◽  
Alena Andreevna Bogdanova ◽  
Ekaterina Aleksandrovna Flerova ◽  
Daria Andreevna Miroshnichenko
Keyword(s):  
Chemical Composition ◽  
Muscle Tissue ◽  
Skeletal Muscles ◽  
Nutrient Content ◽  
Fish Farm ◽  
Muscular Tissue ◽  
Fish Farms ◽  
Study Results ◽  
Sufficient Food Supply ◽  
Peasant Farm

The article gives the results of the study of the fatness and chemical composition of skeletal muscles of underyearling Esox lucius L., grown in different fish-farms of the Yaroslavl and Volgograd regions. The fish was measured, weighed; Foultin’s fatness coefficient was calculated. The amount of water, dry matter, fat, protein, minerals and nitrogen-free extractives were determined in the muscle tissue of the test specimens. In autumn yearlings of both fish farms approach 100 g weight, average body length being 19-21 cm. At the age 2+ pike juveniles of the Volgograd fish farm (sole trader - “Head of the Peasant farm Lozina Ya.V.”) overtake those grown in “Stimul” fish farm, Ltd. in Yaroslavl region in size and mass. However, Fultin’s condition factor in individuals of the Yaroslavl region was significantly higher than in the young from Ya. V. Lozina’s fish farm. There were no statistically significant differences between the water content, protein content, fat content, and nitrogen-free extractives in the skeletal muscles of pike underyearlings from different enterprises. Though, there was registered a significant increase in the amount of mineral substances in the muscle tissue of pike underyearlings from “Stimul”, Ltd ( p < 0,05). On average, muscular tissue of pike underyearlings from “Stimul”, Ltd was larger than that of Ya.V. Lozina’s fish farm in terms of nutrient content and energy value. The study results showed that fatness and chemical composition of the muscle tissue of pike yearlings is more influenced by the sufficient food supply than hydrochemical conditions of the pond.

scholarly journals CHEMICAL COMPOSITION OF FISH MUSCLE OF SMALL RIVERS OF THE YAROSLAVL REGION

2019 ◽  
pp. 112-121
Author(s):  
Mikhail Igorevich Malin ◽  
Marina Igorevna Andreeva ◽  
Alena Andreevna Bogdanova ◽  
Daria Andreevna Miroshnichenko ◽  
Aleksandra Aleksandrovna Payuta ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Skeletal Muscles ◽  
Dry Matter ◽  
Nature Reserve ◽  
Small Rivers ◽  
Total Lipids ◽  
Muscle Tissues ◽  
Study Results ◽  
State Nature Reserve ◽  
State Nature

The article presents the study results of the chemical composition of Cyprinidae and Percidae skeletal muscles from the Sot', Vopsha and Kast' rivers in the territory of the Yaroslavsky State Nature Reserve. The fish were ascertained for sex, stage of gonad maturity, and age. The total amount of water, dry matter, total lipids, protein, minerals, and nitrogen-free extractives (NFE) were determined in their muscle tissues. The study revealed significant differences in the content of final metabolic products in the muscles of individuals of the same species living in different rivers, which may be connected to the difference in food supply or with characteristics of hydrochemical composition of the reservoirs under study. It has been stated that the chemical composition of muscle tissues depends on the trophic status of aquatic organisms, their sex and age. On average, in the rivers the carpal skeletal muscles were superior to the perch muscular tissue in terms of total lipid content, but inferior to the amount of protein, ash, and NFE. As it was revealed, the female muscles contained more protein and fat, than muscles of males and juveniles. Reduction of dry matter and fat in the muscle tissues of roach, sabrefish and rudd (aged 4 to 5) can be associated with attaining puberty in fish. With age, a decrease of water was observed in Cyprinidae and Percidae muscles due to accumulation of dry matter. With ageing of the studied fish in their muscle tissues was found both the increased and decreased concentration of protein, total lipids, mineral substances and NFE. From the data obtained it can be inferred that the fish population of the rivers flowing through the territory of the Yaroslavsky State Nature Reserve exist in relatively favorable conditions.

scholarly journals Features of the chemical composition of crayfish

2019 ◽  
Vol 57 (1) ◽  
pp. 72-79
Author(s):  
Marina L. Kalayda ◽  
◽  
Madina F. Khamitova ◽  
Ilia A. Bogatyrev ◽  
◽  
...  
Keyword(s):  
Chemical Composition ◽  
Muscle Tissue ◽  
Chemical Elements ◽  
Calcium Content ◽  
Dry Weight ◽  
Mineral Matter ◽  
Muscular Tissue ◽  
Kuibyshev Reservoir ◽  
Middle Volga Region ◽  
Edible Parts

The cultivation of crayfish in the structure of aquaculture in the Middle Volga region can be an important component. Currently, natural crayfish populations in the Republic of Tatarstan include 2 species – narrow-toed crayfish (Pontastacus leptodactylus Esch.) and wide-toed crayfish (A. astacus L.). The development of aquabiological technologies allows the use of natural crayfish populations for the tasks of creating industrial breeding farms. In connection with the global trend of the growing popularity of crayfish in food use, the importance of research on the chemical composition of crayfish as objects of consumption grows. The chemical analysis of narrow-fingered crayfish revealed 13 elements, of which calcium is found in maximum amount in the dry residue. The calcium content in the narrow crayfish was 154.057 g/kg dry weight (fig. 1), the chitinous shell of crayfish contains relatively more calcium – up to 376.282 g/kg of dry weight. The following sequences of the content of chemical elements in crayfish from the Kuibyshev reservoir are noted:  in the muscle tissue of edible parts Ca ˃K ˃S ˃P ˃Cu ˃Fe ˃Zn ˃Mn ~ Br ˃Sr;  in the shell Ca ˃Si ˃P ˃S ˃K ˃Sr ˃Ti ˃Fe ˃Mn ˃Cu ˃Br ˃Zn ˃As. In crayfish from the Kuibyshev reservoir we studied, the raw muscle mass of the edible parts of the crayfish contained 88.80% of water, 10.28% of organic substances and 0.92% of mineral substances, and in the chitin-containing raw shells of crayfish, respectively, contained 59.2% of water, 36.42% organic matter and 4.38% mineral matter. The particular interest is the study of crayfish shells, since they consist mainly of chitin. It is a bearing polysaccharide for invertebrate, reaching 85% of the weight of the integuments. In the cuticle of arthropods, chitin forms composite complexes with proteins, pigments, calcium salts. In the composition of the shells of crayfish, 376.282 mg/kg dry mass of calcium is noted. In smaller quantities phosphorus, potassium, iron and zinc are noted. Titanium was found in crayfish shells in the amount of 1845 mg/kg dry weight and was not found in their muscle tissue and other aquatic organisms in the region. In the studied crayfish, the content of heavy metals in the wet mass was: Zn – 0.42 mg/kg; Cu 6.5 mg/kg; Fe – 1.39 mg/kg; Sr – 0.23 mg/kg. Residual amounts of zinc and copper in the muscular tissue of the edible parts of crayfish of the Kuibyshev reservoir are within the normal range. The content of hazardous elements (lead, arsenic, cadmium and mercury) in the crayfish from the Kuibyshev reservoir is within the sanitary and epidemiological norms, and in the Volga delta crayfish the lead content is exceeded.

scholarly journals Development of a Hydropower Turbine Using Seawater from a Fish Farm

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 266
Author(s):  
Md Rakibuzzaman ◽  
Sang-Ho Suh ◽  
Hyoung-Ho Kim ◽  
Youngtae Ryu ◽  
Kyung Yup Kim
Keyword(s):  
Power Plants ◽  
Guide Vane ◽  
Cross Flow ◽  
Synchronous Generator ◽  
Fish Farm ◽  
Hydropower Plant ◽  
Fish Farms ◽  
Data Simulation ◽  
Small Hydropower ◽  
Hydropower Plants

Discharge water from fish farms is a clean, renewable, and abundant energy source that has been used to obtain renewable energy via small hydropower plants. Small hydropower plants may be installed at offshore fish farms where suitable water is obtained throughout the year. It is necessary to meet the challenges of developing small hydropower systems, including sustainability and turbine efficiency. The main objective of this study was to investigate the possibility of constructing a small hydropower plant and develop 100 kW class propeller-type turbines in a fish farm with a permanent magnet synchronous generator (PMSG). The turbine was optimized using a computer simulation, and an experiment was conducted to obtain performance data. Simulation results were then validated with experimental results. Results revealed that streamlining the designed shape of the guide vane reduced the flow separation and improved the efficiency of the turbine. Optimizing the shape of the runner vane decreased the flow rate, reducing the water power and increasing the efficiency by about 5.57%. Also, results revealed that tubular or cross-flow turbines could be suitable for use in fish farm power plants, and the generator used should be waterproofed to avoid exposure to seawater.

Feasibility of Repurposing Offshore Decommissioned Gas Rigs into Fish Farms

2021 ◽  
Author(s):  
Saptarshi Pal ◽  
Chengi Kuo
Keyword(s):  
North Sea ◽  
Net Present Value ◽  
Cost Benefit Analysis ◽  
Storage System ◽  
Artificial Reef ◽  
Cost Benefit ◽  
Fish Farm ◽  
Fish Feed ◽  
Offshore Platforms ◽  
Fish Farms

Abstract In the past 70 years the world has relied extensively for its energy needs based on hydrocarbons produced significantly offshore. In recent years many installations with fixed platforms and pipelines are reaching the end of their useful life and are required by law to be decommissioned and removed if an approved alternative use cannot be found. This process coincides with focus on decarbonization arising from global warming and climate change. The conventional way of decommissioning is to remove the structure and take it onshore for disposal. Such an activity costs around £28 million for smaller UKCS installations in the Southern North Sea. Possible alternative solutions include their use as a research-leisure complex and artificial reef. Such an approach would have less impact on the environment and it is therefore worthwhile to explore the feasibility of repurposing these decommissioned UKCS platforms. The paper begins by highlighting the background to UKCS offshore decommissioning and farming fish life-cycle. This is followed by a critical review of the three options of total and partial removals and leave-on-site. It is found that repurposing decommissioned platforms for aquaculture farm has not been given sufficient attention and thus offers scope for a project to explore the feasibility of such a solution. Existing offshore fish farming in various countries are examined before using a decision-making matrix to select the most suitable UKCS installation for conversion and this led to using a normally unattended gas platform for the case study. The focus for this paper is on design and operation of an unattended fish farm and its cost benefit analysis. The former covers fish cage selection, capacity calculation, fish handling procedures, fish feed characteristics, feed demand, designing feed logistics and storage system. The processing facilities are layout on two decks and power needs are generated using a hybrid system of diesel and Li-ion battery. The possibility of using renewable sources by connecting to wind energy grids was also considered. For the latter capital and operating expenditure, revenue generated and maintenance costs are estimated before performing net present value prediction of the profitability of the fish farm over 10 years with for example up to 8 cages and three discount rates. The main conclusions derived are: It is technically feasible to convert a decommissioned gas platform to a fish farm and the operation can be economic. However, liability transfer implications in a repurposed offshore decommissioned gas platforms to fish farms were not established to verify the project viability. The conversion of unattended offshore gas platforms in the UKCS to an automated offshore fish farm is a novel solution which has not been implemented in the North Sea before. The work will provide an economic and environmental friendly solution to decommissioning offshore platforms and provide with a possible profitable investment.

scholarly journals Retraction: Jelic-Mrcelic G, Sliskovic M. The evaluation of fish farming impact by nutrient content and chlorophyll a in Mala Lamljana bay. Arch biol sci. 2013;65(2):567-70. DOI: 10.2298/ABS1302567J

2015 ◽  
Vol 67 (4) ◽  
pp. 1437-1437
Author(s):  
E Editorial
Keyword(s):  
Biological Sciences ◽  
Water Quality ◽  
Chlorophyll A ◽  
Fish Farming ◽  
Nutrient Content ◽  
Fish Farm ◽  
Significant Part ◽  
Retracted Article ◽  
The Impact ◽  
Font Color

This is a notice of retraction of the article: The evaluation of fish farming impact by nutrient content and chlorophyll A in Mala Lamljana bay, published in the Archives of Biological Sciences in 2013, Vol. 65, Issue 3. The Editor-in-Chief has been informed that the data in this article has already been published in the following article: Jelic Mrcelic G, Sliskovic M. The impact of fish cages on water quality in one fish farm in Croatia. Int Sci Index. 2010;4(8):775-8. Inspection of these articles has revealed the following: a significant part of the data in the article published in the Archives of Biological Sciences was published without proper cross-referencing to the data already published in the earlier paper. This issue was discussed with one of the two authors and it was mutually agreed to retract the article. <br><br><font color="red"><b> Link to the retracted article <u><a href="http://dx.doi.org/10.2298/ABS1302567J">10.2298/ABS1302567J</a></b></u>

scholarly journals Effect of Rosemary (Rosmarinus officinalis L.) Supplementation on Probiotic Yoghurt: Physicochemical Properties, Microbial Content, and Sensory Attributes

Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2393
Author(s):  
Haider I. Ali ◽  
Mithun Dey ◽  
Azalldeen Kazal Alzubaidi ◽  
Sadiq Jaafir Aziz Alneamah ◽  
Ammar B. Altemimi ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Bifidobacterium Longum ◽  
Sensory Attributes ◽  
Rosmarinus Officinalis ◽  
Sensory Properties ◽  
Lactobacillus Delbrueckii ◽  
Rosemary Extract ◽  
Total Phenolic ◽  
Study Results ◽  
Rosmarinus Officinalis L

Rosemary (Rosmarinus officinalis L.) is a natural aromatic plant that belongs to the family of Lamiaceae. The rosemary plant has been utilized to preserve food due to its ability to prevent oxidation and microbial contamination. This study aimed to investigate the effect of fortifying yoghurt with rosemary extracts and probiotic bacteria (LAB) (Bifidobacterium longum ATCC15707 and two lactic acid bacteria, Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus) on its chemical composition, total phenolic compounds, antioxidant capacity, and sensory properties. The study results revealed significant differences in the total solids, protein, and ash content when rosemary concentration increased beyond 2%. However, there were no significant differences among the treatments in acidity and pH value. The sensory evaluation results indicated that the addition of aqueous extract of rosemary affected the sensory properties of yoghurt (flavour, body and texture, appearance, and overall grade), wherein an increasing concentration of rosemary extract increased score of flavour, body and texture, appearance, and overall grade. On the other hand, rosemary extract did not affect the sensory properties and chemical composition. To sum up, it can be stated that rosemary was used in the preparation of yoghurt with increased health benefits, acceptable sensory attributes, and the production of synbiotic yogurt.

scholarly journals ANALISIS BEBERAPA UNSUR KIMIA KOMPOS Azolla mycrophylla

2018 ◽  
Vol 14 (2) ◽  
pp. 60-5
Author(s):  
Sri Utami Lestari ◽  
Muryanto Muryanto
Keyword(s):  
Chemical Composition ◽  
Chemical Analysis ◽  
Rainy Season ◽  
Nutrient Content ◽  
N Fertilizer ◽  
High Nitrogen ◽  
Leaf Part

The most consumed part of the plants is the leaf part so that the fertilizer provided should contain high nitrogen (N). The nature of the N fertilizer is volatile and when the rainy season there can be washing.  When plants deficienci nutrients shows symtoms of yellowing leaves so that the application of N fertilizer to the plant must remain unfulfilled.  Azolla is a usable alternative.  Azolla has a high N nutrient content because it is symbiotic with anabaena in binding to free nitrogen in the air.             The purpose of this study was to determine the chemical composition (pH,N,P,K) Azolla mycrophylla.  The experiment was conducted experimentally with the first stage of composting azolla after it was done chemical analysis in the laboratory.  The result of this research can be concluded that chemical analysis of Azolla mycrophylla cpmpost is as follows :pH 7,17, N 2,57%, P 0,34%, K 0,03%.  

scholarly journals Proximate Analysis of Kijing Taiwan Carcass (Anodonta woodiana) in Wet and Dry Forms

2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Nurrahmi I Saiful ◽  
Cyska Lumenta
Keyword(s):  
Chemical Composition ◽  
Vitamin C ◽  
Proximate Composition ◽  
Scientific Information ◽  
Nutrient Content ◽  
Proximate Analysis ◽  
Crude Fiber ◽  
Fish Feed ◽  
Field Practice ◽  
Anodonta Woodiana

Field practice activities conducted in laboratory incluiding the process of carcass removal from its shells was done in the Laboratory of Nutrition and Fish Feed Technology, and also analysis of Kijing Taiwan carcass chemical composition was done in the Research and Industrial Standardization Institute of Manado. The purpose of field practice are: Analyzing the Proximate composition, Vitamin C, Calcium, and Energy of Kijing Taiwan carcass taiwan in wet and dry form. Providing scientific information about the nutrient content of Kijing Taiwan in wet and dry form. Acquire skills in operating the Proximate instruments of Vitamin C, Calcium, and Energy in the laboratory. Based on the results of the Kijing Taiwan (Anodonta woodiana) carcass proximate analysis  in wet form, the data showed, 11.59% of protein, 80.66% of water, 0.26% of fat, 3.06% of ash, 0.23% of crude fiber, 4.20% of carbohydrate, 65.5 kcal of energy, 0.59% of calcium, 3.86 mg/100 g of Vitamin C. While the dry form of the data showed, 54.84% of protein, 12.18% of water, 4.08% of fat, 14.92% of ash, 0.53% of crude fiber, 13.45% of carbohydrates, 309.88 kcal of energy, 0.55% of calcium, 14.88% of vitamin C mg/100 g. Keywords: Carcass,  Anodonta woodiana, proximate analysis, vitamin C, calcium, and energy

Water Quality of Lake Iskanderkul and Its Tributaries

2020 ◽  
Vol 6 (2) ◽  
pp. 79-88
Author(s):  
Z.O. Normakhmedova ◽  
◽  
A.V. Mitusov
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Chemical Composition ◽  
Fish Farming ◽  
Natural Phenomena ◽  
Change Dynamics ◽  
Chemical Composition Of Water ◽  
Study Results ◽  
Copper Zinc

This article presents the study results of the change dynamics in the chemical composition of water in Lake Iskanderkul and the rivers flowing into it, as well as the comparison of water quality in the water bodies of the Iskanderkul Basin and several mid-stream tributaries of the Zarafshan River. It was established that the chemical composition of water in Lake Iskanderkul and its tributaries meets the requirements of the corresponding state standard (GOST 2874-82 “Drinking Water”). However, in terms of dissolved oxygen, copper, zinc, lead and iron the water in Lake Iskanderkul does not satisfy fish farming requirements. The main water pollution sources in the area include such natural phenomena as floods, avalanches, mudslides, and rock dissolution.

Tarczyca bocznokwiatowa (Scutellaria lateriflora) – znaczenie w medycynie tradycyjnej i pozycja we współczesnej fitoterapii

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Inga Kwiecień ◽  
Beata Kawka ◽  
Halina Ekiert
Keyword(s):  
Chemical Composition ◽  
North American ◽  
Folk Medicine ◽  
Raw Material ◽  
Study Results ◽  
Phenylpropanoid Glycosides ◽  
Scutellaria Lateriflora ◽  
Sedative Action ◽  
Main Components

American skullcap (Scutellaria lateriflora L.) has long been used as a medicine by North American Indian tribes. A monograph of Scutellariae lateriflorae herba was included in the American Herbal Pharmacopoeia in 2009. This raw material is very popular in North America because of its sedative action. It is also highly valued in Australia, while in Europe, it has been widely used until now in the United Kingdom. The main components of the herb of this plant species include flavonoids specific for the Scutellaria genus, mostly baicalein, baicalin, wogonin, scutellarin. They are accompanied by other groups of compounds: diterpenoids – neoclerodan derivatives, γ-aminobutyric acid, melatonin, serotonin, catalpol, phenolic acids, phenylpropanoid glycosides (mostly verbascoside) and essential oil. Studies of chemical composition and investigation of medicinal activity of this raw material confirmed its uses known from North American folk medicine. Study results proved most of all a significance of flavonoid compounds present in the raw material for its documented biological activity. The aim of the paper is to review the present knowledge on chemical composition and medicinal significance of this very valuable plant. The research team from the Department of Pharmaceutical Botany JU MC initiated biotechnological studies of this species. Its microshoots successfully grown in vitro produce considerable amounts of specific flavonoids (mostly baicalin and wogonoside) and verbascoside, and in future they can be an alternative rich source of these compounds for pharmaceutical and cosmetic applications.

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