Comparative study of enzymes inactivation and browning pigmentation of apple (Malus domestica) slices by selected gums during low temperature storage

2018 ◽  
Vol 42 (6) ◽  
pp. e12681 ◽  
Author(s):  
Frederick Sarpong ◽  
Patricia Oteng‐Darko ◽  
Moses Kwaku Golly ◽  
Leticia Peace Amenorfe ◽  
Muhammad Tayyab Rashid ◽  
...  
Keyword(s):  
Low Temperature ◽  
Comparative Study ◽  
Malus Domestica ◽  
Low Temperature Storage ◽  
Temperature Storage

A comparative study of properties of chitin synthase from two Mortierella species

1985 ◽  
Vol 31 (11) ◽  
pp. 1035-1040 ◽  
Author(s):  
J. P. Adjimani ◽  
M. S. Manocha
Keyword(s):  
Low Temperature ◽  
Comparative Study ◽  
Membrane Fraction ◽  
Strong Acid ◽  
Weak Acid ◽  
Chitin Synthase ◽  
Inhibition Constant ◽  
Enzyme Preparations ◽  
Low Temperature Storage ◽  
Temperature Storage

Properties of chitin synthase obtained from mycelial homogenates of Mortierella pusilla and Mortierella candelabrum were compared. The enzyme was localized mainly in the mixed membrane fractions of both species. The reaction product, chitin, was characterized by its insolubility in weak acid and alkali and by the release of glucosamine and diacetylchitobiose on hydrolysis with strong acid and chitinase, respectively. Apparent Km values for UDP-N-acetyl-D-glucosamine (UDP-GlcNAc) were 1.8 mM and 2.0 mM for M. pusilla and M. candelabrum, respectively, and the inhibition constant, Ki, for polyoxin D was three orders of magnitude lower than the Km for UDP-GlcNAc. Enzyme preparations from both species were stimulated by Mg2+, Mn2+ or Co2+ and N-acetyl-glucosamine. Large differences in the ratio of active to inactive chitin synthase of the two species, were observed. Unlike M. candelabrum chitin synthase activity in the membrane fraction of M. pusilla increased during low temperature storage. The 100 000 × g supernatant fractions from cell-free extracts of M. candelabrum and M. pusilla were found to inhibit chitin synthase activity in both the fungi.

USS 9% NICKEL STEEL

Alloy Digest ◽  
1964 ◽  
Vol 13 (8) ◽  
Keyword(s):  
United States ◽  
Fracture Toughness ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Steel ◽  
Low Temperature Storage ◽  
United States Steel Corporation ◽  
Steel Corporation ◽  
Temperature Storage

Abstract USS 9% Nickel Steel was specifically developed for low-temperature storage vessels operating down to minus 320 F. It is recommended for cryogenic service. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. Filing Code: SA-166. Producer or source: United States Steel Corporation.

scholarly journals Volatile Aromatic Constituents of Tree Ripened and Mature Green ‘Irwin’ Mango Fruits during Low Temperature Storage

2006 ◽  
Vol 75 (3) ◽  
pp. 209-212 ◽  
Author(s):  
Kodthalu Seetharamaiah Shivashankara ◽  
Seiichiro Isobe ◽  
Hiroshi Horita ◽  
Makiko Takenaka ◽  
Takeo Shiina
Keyword(s):  
Low Temperature ◽  
Low Temperature Storage ◽  
Temperature Storage

scholarly journals Viability of Najawa carp (Cyprinus carpio L.) sperm at 4°C temperature storage

2020 ◽  
Vol 147 ◽  
pp. 01015
Author(s):  
Dimas Fendy Pradana ◽  
Ignatius Hardaningsih ◽  
Dini Wahyu Kartika Sari
Keyword(s):  
Low Temperature ◽  
Cyprinus Carpio ◽  
Sperm Viability ◽  
Low Temperature Storage ◽  
Progressive Motility ◽  
C Storage ◽  
Randomized Design ◽  
Significant Difference ◽  
Carp Cyprinus Carpio ◽  
Temperature Storage

The objectives of this study were to evaluate the sperm viability of Najawa carp (Cyprinus carpio L.) in cryopreservation pre-conditions at 4°C. The design used in this study was Complete Randomized Design with 4 treatments, BSS as a control, 10% DMSO, 0,2 M Sucrose, and 5% DMSO + 0,1 M Sucrose; each consist of three replications. The parameters observed were progressive motility of fresh sperm, diluted sperm before low temperature storage, and 2 hours; 3 hours; 4 hours; 5 hours; one day; one week; a month after 4°C storage. The data were analyzed by ANOVA. The data showed that there was no significant difference between treatment (P>0.05). The best viability was 40.56% of sperm motility which survive for one week, it was achieved by 5% DMSO + 0,1 M Sucrose.

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