Control of Rancidity in Fish Flesh: II. Physical and Chemical Methods

1948 ◽  
Vol 7b (5) ◽  
pp. 237-247 ◽  
Author(s):  
H. L. A. Tarr
Keyword(s):  
Carbon Dioxide ◽  
Ascorbic Acid ◽  
Fat Oxidation ◽  
Ethyl Gallate ◽  
Chemical Methods ◽  
Fish Flesh ◽  
Partial Pressures ◽  
Frozen Fish ◽  
Physical And Chemical ◽  
Related Compounds

Storage of frozen fish in high partial pressures of carbon dioxide or nitrogen effectively prevented fat oxidation and organoleptically detectable rancidity. Carbon dioxide stored fish developed an undesirable flavour not observed in that stored in nitrogen. Ice glazes formed from water or ethyl gallate solutions were about equally effective in delaying fat oxidation in frozen salmon steaks or fillets, but considerably less effective than 1-ascorbic acid or sodium 1-ascorbate glazes. Immersing salmon steaks or fillets in 1-ascorbic acid or sodium 1-ascorbate solutions strongly inhibited fat oxidation. 1-Ascorbic acid and closely related compounds were as effective, or more effective, than ethyl gallate or several other gallic acid derivatives for frozen fish. When 1-ascorbic acid was added to fish flesh its concentration fell rapidly at first, and then very slowly in the frozen fish.

Control of Rancidity in Fish Flesh: I. Chemical Antioxidants

1947 ◽  
Vol 7a (3) ◽  
pp. 137-154 ◽  
Author(s):  
H. L. A. Tarr
Keyword(s):  
Ascorbic Acid ◽  
Propyl Gallate ◽  
Fat Oxidation ◽  
Ethyl Gallate ◽  
Fish Flesh ◽  
Naturally Occurring ◽  
Tartaric Acids ◽  
Cysteine Hydrochloride ◽  
Frozen Fish ◽  
Pre Treatment

The development of rancidity in the naturally occurring fats of frozen fish was retarded by treatment with ascorbic acid (0.05%), ethyl, n-propyl, n-butyl or hexyl gallates (0.01 to 0.05%), and cysteine hydrochloride (0.05%). Ethanol ammonium gallate (0.02%), dodecyl thiodipropionate (0.05%), thiourea (0.05%), citric and tartaric acids (0.02%) were ineffective. The loss of surface red colour which occurred during storage of coho and red spring salmon was largely prevented by pre-treatment with 0.02% of ethyl or propyl gallate. Both NaCl and NaNO2 acted as pro-oxidants in frozen fish. In unfrozen salmon flesh stored at 0 °C. both ethyl gallate and NaNO2 retarded fat oxidation and bacterial increase.

Control of Rancidity in Fish Flesh: III. Carbonyl Enediols as Antioxidants.

1949 ◽  
Vol 7c (9) ◽  
pp. 522-527 ◽  
Author(s):  
H. L. A. Tarr ◽  
N. E. Cooke
Keyword(s):  
Ascorbic Acid ◽  
Fat Oxidation ◽  
Ammonium Salts ◽  
Fish Flesh

The cyclic carbonyl enediols, reductic acid and l-ascorbic acid, strongly retarded fat oxidation in frozen minced red spring salmon or herring flesh stored at −10 or −20 °C., the former being more effective than the latter. The acyclic carbonyl enediols and dihydroxymaleic acid with its sodium and ammonium salts and reductone were either ineffective or afforded only slight protection.

Modification of Collagen for Biomedical Applications: A Review of Physical and Chemical Methods

2016 ◽  
Vol 20 (17) ◽  
pp. 1797-1812 ◽  
Author(s):  
Xiaoyue Yu ◽  
Cuie Tang ◽  
Shanbai Xiong ◽  
Qijuan Yuan ◽  
Zhipeng Gu ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Chemical Methods ◽  
Physical And Chemical

Biomedical Applications and Patents on Metallic Nanoparticles

2020 ◽  
Vol 10 ◽  
Author(s):  
Geetanjali Singh ◽  
Pramod Kumar Sharma ◽  
Rishabha Malviya
Keyword(s):  
Metallic Nanoparticles ◽  
Biomedical Applications ◽  
Size Range ◽  
Biomedical Application ◽  
Chemical Reduction ◽  
Chemical Methods ◽  
Future Challenges ◽  
Biological Methods ◽  
Cancer Diagnosis And Therapy ◽  
Physical And Chemical

Aim/Objective: The author writes the manuscript by reviewing the literatures related to the biomedical application of metallic nanoparticles. The term metal nanoparticles are used to describe the nanosized metals with the dimension within the size range of 1-100 nm. Methods: The preparation of metallic nanoparticles and their application is an influential area for research. Among various physical and chemical methods (viz. chemical reduction, thermal decomposition, etc.) for synthesizing silver nanoparticles, biological methods have been suggested as possible eco-friendly alternatives. The synthesis of metallic nanoparticles is having many problems inclusive of solvent toxicity, the formation of hazardous byproducts and consumption of energy. So it is important to design eco-friendly benign procedures for the synthesis of metallic nanoparticles. Results: From the literature survey, we concluded that metallic nanoparticles have applications in the treatment of different diseases. Metallic nanoparticles are having a great advantage in the detection of cancer, diagnosis, and therapy. And it can also have properties such as antifungal, antibacterial, anti-inflammatory, antiviral and anti-angiogenic. Conclusion: In this review, recent upcoming advancement of biomedical application of nanotechnology and their future challenges has been discussed.

scholarly journals Decreasing Oxalate Levels in Kimpul Tubers (Xanthosoma sagittifolium) by Physical and Chemical Methods

2021 ◽  
Vol 667 (1) ◽  
pp. 012015
Author(s):  
I Sulaiman ◽  
C Annisa ◽  
Y M Lubis ◽  
Z F Rozali ◽  
S Noviasari ◽  
...  
Keyword(s):  
Chemical Methods ◽  
Xanthosoma Sagittifolium ◽  
Physical And Chemical

COMPARAISON DE DIVERSES METHODES DE CASTRATION ET DE STERILISATION DES AGNEAUX: I. INFLUENCE DE CES METHODES SUR LA CROISSANCE, L’EFFICIENCE ALIMENTAIRE, LE RENDEMENT A L’AHATTAGE ET LA RENTABILITE

1971 ◽  
Vol 51 (3) ◽  
pp. 579-589 ◽  
Author(s):  
J. M. BAILLARGEON ◽  
J. P. LEMAY ◽  
W. B. HOLTMANN ◽  
L. A. CHARETTE
Keyword(s):  
Feed Efficiency ◽  
Intramuscular Injection ◽  
Cadmium Chloride ◽  
Complete Removal ◽  
Chemical Methods ◽  
Treatment Groups ◽  
Dressing Percentage ◽  
Breeding Groups ◽  
Physical And Chemical ◽  
Daily Gain

An experiment was conducted to compare various physical and chemical methods of castration of lambs at 15 and 60 days of age. Their effects on body growth, feed efficiency, dressing percentage and profitability were studied. At birth 100 lambs were divided among the 16 different treatments according to sex and the following breeding groups: Suffolk, North Country Cheviot, two-breed cross and three-breed cross. The different methods of castration were: complete removal of the testicles, Burdizzo, elastrator and partial castration. The sterilization methods consisted of intramuscular, intratesticular and intraveinous injection of cadmium chloride. All lambs were weaned at 30 days of age and placed in individual pens. They were subjected to similar environmental conditions and shipped to slaughter at approximately 45 kg body weight. Significant differences were observed among breeds, sexes and the various castration methods for daily gain, feed efficiency, days required to reach market and profitability. Age at castration did not have any important effect ort the variables measured. Superior gains, feed efficiency and profitability were observed for the partially castrated group, for the lambs that received an intramuscular injection of cadmium chloride and for the non-castrated males. All treatment groups involving males were superior to the females for the characters studied except for dressing percentage.

A Study of the Physical and Chemical Processes Active in Ozone Generation by Carbon Dioxide Fed Corona Discharges

2007 ◽  
Vol 29 (5) ◽  
pp. 399-404 ◽  
Author(s):  
J.D. Skalny ◽  
S. Matejcik ◽  
J. Orszagh ◽  
R. Vladoiu ◽  
N.J. Mason
Keyword(s):  
Carbon Dioxide ◽  
Chemical Processes ◽  
Corona Discharges ◽  
Ozone Generation ◽  
Physical And Chemical
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