scholarly journals Dependence of fat acidity value on wheat grain storage conditions

2020 ◽  
Vol 17 ◽  
pp. 00107
Author(s):  
I. A. Kechkin ◽  
V. A. Ermolaev ◽  
M. V. Ivanov ◽  
A. I. Romanenko ◽  
E. A. Gurkovskaya
Keyword(s):  
Storage Temperature ◽  
Storage Period ◽  
Acid Value ◽  
Storage Conditions ◽  
Air Humidity ◽  
Wheat Grain ◽  
Storage Duration ◽  
Long Term Storage ◽  
Relative Air Humidity

The article presents the dependence of the fat acidity value (FAV) on the values of humidity and temperature, the relationship between the storage duration for wheat grain and FAV. To establish the expiration date of wheat grain during long-term storage, the author of the article considered the fat acid value (FAV) in mg of KOH. Storage temperature and relative air humidity in a desiccator affect the change (growth) of fat acidity value. The greatest changes occurred at 6th, 7th and 8th months of storage at a relative air humidity of more than 65 % and temperatures above 20 °C. At a storage temperature of 10 °C, in all cases the growth of FAV remained insignificant and was within the limits of determination accuracy. It is noted that when the relative humidity was below 60 %, while the temperature was the same as in the previous case, the FAV of wheat grain was practically unchanged through the 6-month storage period.

Efficacy of the Antigenicity-Retaining Ability of Fixative Solutions for Liquid-Based Cytology: Immunocytochemistry of Long-Term Storage

2021 ◽  
pp. 1-12
Author(s):  
Hiaki Sato ◽  
Yoshiaki Norimatsu ◽  
Satoshi Irino ◽  
Takeshi Nishikawa
Keyword(s):  
Cell Membrane ◽  
Room Temperature ◽  
Storage Temperature ◽  
Storage Period ◽  
Storage Conditions ◽  
Immunocytochemical Staining ◽  
Long Term Storage ◽  
Liquid Based Cytology ◽  
Term Storage

<b><i>Introduction/Objective:</i></b> Liquid-based cytology (LBC) is advantageous as multiple stained specimens can be prepared and used for additional assays such as immunocytochemical and molecular-pathological investigations. Two types of preservative-fixative solutions (fixatives) are used for nongynecologic specimens used in the BD SurePath-LBC (SP-LBC) method, and their components vary. However, few studies have evaluated the differences in antigen-retaining ability between these fixatives. Therefore, we investigated and compared the antigen-retaining ability of the fixatives in immunocytochemical staining (ICC) under long-term storage conditions. <b><i>Materials and Methods:</i></b> Sediments of cultured RAJI cells (derived from Burkitt’s lymphoma) were added to each fixative (red and blue) and stored at room temperature for a specified period (1 h; 1 week; and 1, 3, and 6 months). The specimens were then prepared using the SP-LBC method and subjected to ICC. Positivity rate was calculated using the specimens fixed at room temperature for 1 h as a control. Antibodies against Ki67 expressed in the nucleus and against CD20 and leukocyte common antigen (LCA) expressed on the cell membrane were used. <b><i>Results:</i></b> For CD20 and LCA, the positivity rate increased with time in the red fixative compared with that in the control. In the blue fixative, the positivity rate was highest at 1 h and was maintained at a high level throughout the storage period. In contrast, the Ki67 positivity rate was highest at 1 h in both red and blue fixatives and markedly decreased with time. Therefore, although refrigerated (8°C) storage was used, no improvement was noted. <b><i>Conclusions:</i></b> Long-term storage is possible for cell membrane antigens at room temperature; however, it is unsuitable for intranuclear antigens. Therefore, we conclude that suitable fixative type and storage temperature differ based on antigen location. Further investigation is warranted.

scholarly journals Management of air flows inside steel silo during grain storage

2020 ◽  
Vol 17 ◽  
pp. 00108
Author(s):  
I. A. Kechkin ◽  
V.A. Ermolaev ◽  
A.I. Romanenko ◽  
V.V. Tarakanova ◽  
K.D. Buzetti
Keyword(s):  
Temperature Difference ◽  
Air Humidity ◽  
Wheat Grain ◽  
Long Term Storage ◽  
Relative Air Humidity ◽  
Condensate Formation ◽  
Effects Of Temperature ◽  
Condensed Moisture ◽  
Term Storage

A study was conducted concerning effects of temperature and relative air humidity during long-term storage of wheat grain in a steel silo. The study was aimed at identifying the possibility of condensed moisture appearing under the silo roof. The probable periods of condensate in the space under the silo roof depending on the temperature difference inside and outside the silo have been determined. Some ways to prevent the condensate formation are proposed in the paper.

Changes in the content of organic acids and inorganic anions in sugar beet during long-term storage

2016 ◽  
pp. 760-764 ◽  
Author(s):  
Maciej Wojtczak ◽  
Aneta Antczak-Chrobot ◽  
Paulina Miko ◽  
Magdalena Molska ◽  
Ilona Baszczyk ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Storage Conditions ◽  
Denitrifying Bacteria ◽  
Raw Material ◽  
Storage Duration ◽  
Long Term Storage ◽  
Term Storage ◽  
Acetic Acids

Due to the prolongation of the period of the sugar campaign, it is necessary to optimize the storage conditions, so that changes in the quality of the raw material could be minimized. The aim of this study was to determine the effect of storage duration and temperature on changes in the composition of sugar beet. The study presents the changes in the content of glucose, fructose, raffinose, lactic and acetic acids, nitrates and nitrites as well as in the content of the total number of mesophilic bacteria, denitrifying bacteria and spores of denitrifying bacteria during storage under various conditions.

Effects of Storage Duration on Biodiesel Properties Derived from Waste Cooking Oil

2014 ◽  
Vol 554 ◽  
pp. 494-499 ◽  
Author(s):  
Amir Khalid ◽  
Norazwan Azman ◽  
Hanis Zakaria ◽  
Bukhari Manshoor ◽  
Izzuddin Zaman ◽  
...  
Keyword(s):  
Water Content ◽  
Fossil Fuels ◽  
Storage Temperature ◽  
Acid Value ◽  
Waste Cooking Oil ◽  
Storage Conditions ◽  
Storage Duration ◽  
Oil Reserves ◽  
Cooking Oil ◽  
Different Temperatures

The reduction of world oil reserves fossil fuels and increasing environmental concerns significantly influences the popularity of biodiesel as an alternative diesel. This research investigates the effects of storage duration of variant blending waste cooking oil ratio under different storage temperature on fuel properties. The biodiesel samples were stored at different temperatures and were monitored at regular interval over a period of 70 days. Blending of biodiesel was varied from 5vol % (WCO5) ~15vol% (WCO15) and storage temperature from 24°C~35°C. These samples were monitored on a weekly and the effects of storage conditions on properties of biodiesel such as density, kinematics viscosity, acid value, water content and flash point of biodiesel were discussed in detail. The observation of biodiesel shows that the increasing of storage duration of biodiesel derived from waste cocking oil influences to the increasing of density, kinematics viscosity, acid value and water content.

scholarly journals Storage Temperature, Controlled Atmosphere, and 1-Methylcyclopropene Effects on α-Farnesene, Conjugated Trienols, and Peroxidation in Relation with Superficial Scald, Pithy Brown Core, and Fruit Quality of ‘d’Anjou’ Pears during Long-term Storage

2016 ◽  
Vol 141 (2) ◽  
pp. 177-185 ◽  
Author(s):  
Yan Wang
Keyword(s):  
Storage Temperature ◽  
Storage Conditions ◽  
Controlled Atmosphere ◽  
Metabolic Balance ◽  
Superficial Scald ◽  
Long Term Storage ◽  
Temperature Controlled ◽  
Term Storage

Alternatives to ethoxyquin (Etq) are needed for controlling superficial scald of ‘Anjou’ european pears (Pyrus communis) during long-term storage. The current commercial standard storage conditions [Etq + −1 °C + controlled atmosphere (CA) with 1.5 kPa O2] reduced scald occurrence compared with control fruit (−1 °C + CA) during 6–8 months storage. At 1 °C in air, 1-methylcyclopropene (1-MCP) fumigation at 0.15 µL·L−1 at harvest was more efficient on reducing scald than Etq but did not prevent scald during 6–8 months storage. The 1-MCP-treated fruit at 1 °C in air developed their ripening capacity at 20 °C following 6–8 months storage but had deceased shipping ability (softening and yellowing of fruit). Although Etq inhibition of scald was associated with the inhibition of α-farnesene oxidation to conjugated trienols (CTols); 1-MCP reduced α-farnesene synthesis and thereby the availability of substrate to oxidize to CTols. CA storage at 1.5 kPa O2 totally prevented scald and retarded the loss of shipping ability without affecting the ripening capacity of 1-MCP-treated fruit at 1 °C through further decreases in the syntheses of ethylene, α-farnesene and CTols during 6–8 months storage. In addition, 1-MCP prevented a CA-induced disorder, pithy brown core (PBC), in ‘Anjou’ pears possibly through enhancing an oxidative/reductive metabolic balance during extended storage. In conclusion, the combinations of 1 °C + 1-MCP + CA is a potential commercial alternative to Etq for scald control while allowing the 1-MCP-treated ‘Anjou’ pears to recover ripening capacity during the shelf life period after 6–8 months storage.

CHARACTERISTICS OF NORSODYNE AS PLASTINATION AGENT

2019 ◽  
Vol 17 (Suppl. 2) ◽  
pp. 4-6
Author(s):  
A. Georgieva ◽  
J. Stoyanov ◽  
N. Tsandev ◽  
D. Sivrev
Keyword(s):  
Storage Temperature ◽  
Unsaturated Polyester ◽  
Specific Weight ◽  
Storage Conditions ◽  
Test Method ◽  
Test Results ◽  
Long Term Storage ◽  
New Material ◽  
Higher Temperature

Background: Norsodyne is a new material for conservation and durable preservation of biological objects. The form we use is H 13212 TAE (Polynt Composites USA, Inc., Bergamo, Italy). This is an unsaturated polyester resin in styrene that is of low styrene emission. Features: resin has a specific weight 1.10 g/cm2 at 20°C. Using test method MT-CUT23V the manufacturer has established that Brookfield viscosity at 23°C is 450-650 mPa.s. The jelly starts in 14-18 minutes and reaches its peak in 27-37 minutes at 23°C too. Acording to the test results of ISO 527 (2012) tensile strength of Norsodyne is 57 MPa and flexural strength is 98 MPa (ISO 178 (2011). Conclusion: This characteristic of Norsodyne indicates that the material can be used for the preservation and long-term storage of anatomical preparations for the needs of anatomy training. However, the Norsodyne needs special storage conditions. The material should be stored in a dark place. According to the manufacturer shelf life at 23°C in the dark is six months then spontaneous rubbing begins. The manufacturer's recommendations are: Store in the shade, out of direct sunlight. Keep storage temperature below 25°C. Unseal container just before use. Shelflife will be reduced reaching higher temperature.

Energy Saving System Based on Heat Pump for Maintain Microclimate of the Agricultural Objects

2020 ◽  
pp. 60-84 ◽  
Author(s):  
Giedrius Ge ◽  
Irina Georgievna Ershova ◽  
Alexey N. Vasilyev ◽  
Dmitry Tikhomirov ◽  
Gennady Nikolaevich Samarin ◽  
...  
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Electric Heater ◽  
Air Humidity ◽  
Long Term Storage ◽  
Relative Air Humidity ◽  
Term Storage

At agricultural facilities, the main attention is paid to the formation and maintenance of their microclimate parameters, and mechanization of storage processes. As world experience shows, it is necessary to develop and implement energy-saving systems and the use of renewable energy sources. The authors have developed energy-saving systems based on the heat pump, with upgraded electrical regulators. The developed system (patent 100873), uses thermoelectric elements and a low-potential energy source, to effectively maintain the temperature parameters of the microclimate during long-term storage of potatoes, but it requires a large amount of electricity consumption (30 to 35 kW), so the authors have developed an energy-saving system based on a heat pump (patent 123909). The temperature regime is achieved by using a thermoelectric cooler-heater and an electric heater. The humidifier allows for maintaining the necessary relative air humidity.

scholarly journals Kinetic Analysis of Stabilizing C-Phycocyanin in the Spirulina platensis Extracts from Ultrasonic Process Associated with Effects of Light and Temperature

2018 ◽  
Vol 8 (9) ◽  
pp. 1662 ◽  
Author(s):  
Woon Yong Choi ◽  
Hyeon Yong Lee
Keyword(s):  
Storage Temperature ◽  
Extraction Process ◽  
Storage Conditions ◽  
Second Order ◽  
Light Illumination ◽  
First Order ◽  
Long Term Storage ◽  
Ultrasonic Process ◽  
Term Storage

A kinetic model was developed to reflect the stability of C-Phycocyanin (C-PC) from ultrasonic extraction process under different storage conditions. The decrease of C-PC contents was most accelerated at a high temperature of 40 °C along with light illumination, resulting in ca. 60% drop of an initial concentration for two months of storage. However, ca. 93% of the initial contents remained at 4 °C without light, which would be a most favorable condition for long-term storage. It was first shown that the decrease of the residual concentrations followed second-order kinetics under light illumination. However, without light, the decrease of the C-PC contents showed first order reaction kinetics, which implies initial C-PC concentrations are important. On the contrary, initial storage temperature seemed to be more influential under light illumination. It was also first revealed that the rate of degrading the C-PC was faster with light than without light even at the same temperature, having 0.0108 (1/h) and 0.0138 (1/h) of rate constants of first order (no light) and second order kinetics (with light) at 40 °C, respectively. Moreover, the cleavage of C-PC was also found to follow the Arrhenius relationship. Therefore, this work could provide desirable storage conditions of C-PC from non-thermal ultrasonic process for long-term storage.

The Effect of Storage Temperature and Physical State on the Performance of Antisera in Radioimmunoassay after Long-Term Storage

1988 ◽  
Vol 25 (1) ◽  
pp. 89-95
Author(s):  
B A Middleton ◽  
L M Morgan ◽  
G W Aherne ◽  
V Marks
Keyword(s):  
Room Temperature ◽  
Storage Temperature ◽  
Storage Conditions ◽  
Liquid Form ◽  
Long Term Storage ◽  
Freeze Dried ◽  
Control Serum ◽  
Term Storage ◽  
Temperature Storage

The performance in radioimmunoassay of four antisera after storage at temperatures ranging from −40°C to room temperature, in three physical states (frozen, liquid or freeze dried) was investigated over a 3-year period. No deterioration in antiserum performance in terms of precision and accuracy of quality control serum measurement or recovery of ligand was apparent under any of the storage conditions studied. Some lowering of titre became apparent in two of the antisera over the study period. Deterioration was most marked when antiserum was stored lyophilised at room temperature. Storage of antiserum frozen confers no advantage over storage at 4°C provided precautions are taken to minimise bacterial contamination when storing antiserum in liquid form.

Diapause induction and termination in Indian strains of Trichogramma chilonis (Hymenoptera: Trichogrammatidae)

2017 ◽  
Vol 149 (5) ◽  
pp. 607-615 ◽  
Author(s):  
Enakshi Ghosh ◽  
Chandish R. Ballal
Keyword(s):  
Large Scale ◽  
Biocontrol Agent ◽  
Storage Temperature ◽  
Adult Emergence ◽  
Diapause Induction ◽  
Storage Duration ◽  
Trichogramma Chilonis ◽  
Long Term Storage ◽  
Term Storage

AbstractThe role of temperature in diapause induction was studied as a mode of long-term storage of Trichogramma chilonis (Ishii) (Hymenoptera: Trichogrammatidae). Three different strains of this widely used biocontrol agent (T. chilonis Nilgiris strain, T. chilonis Kodaikanal strain, and T. chilonis 15 °C strain) reared on the factitious host Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) were used for this experiment. Except T. chilonis laboratory strain, all the other strains could successfully undergo diapause at their pre-pupal stage. Maximum percentage of healthy pre-pupae were recorded in the three strains by providing a pre-storage temperature of 10 °C for 35 days with eight hours of photophase wherein 75–87% could enter into diapause. Further, at a maintenance temperature of 5 °C with 24 hours of scotophase, diapause could be maintained. Diapause could be terminated after six months of storage with 23–36% of adult emergence. However, there was significant reduction in longevity and parasitism rate of the emerged adults. Considering superior biological parameters, 95 days of storage (including pre-storage duration) could provide around 60% adult emergence. Successful long-term storage of T. chilonis strains through diapause induction can facilitate commercial insectaries in stockpiling this biocontrol agent for large-scale field releases. This is the first study on successful induction and termination of diapause in T. chilonis strains and evaluating their performance attributes.

Sign in / Sign up

Export Citation Format

Share Document