Comparative Characterization of Microbiological and Biological Assays of Protein Quality of Some Foodstuffs

Nahrung/Food ◽  
1974 ◽  
Vol 18 (3) ◽  
pp. 243-249 ◽  
Author(s):  
S. G. Kharatyan ◽  
M. G. Kerimova ◽  
A. D. Ignatyev ◽  
M. E. Rozhansky
Keyword(s):  
Protein Quality ◽  
Biological Assays ◽  
Comparative Characterization

scholarly journals Comparative characterization of starch biopolymers extracted from cereals using two different techniques

2020 ◽  
pp. 21-26
Author(s):  
Marisa Rivera-Arredondo ◽  
Mario Alberto Rodríguez-Ángeles ◽  
Verónica de Jesús Morales-Félix ◽  
Marina Gaytán-Ruelas
Keyword(s):  
Oryza Sativa ◽  
Avena Sativa ◽  
Chemical Characteristics ◽  
Crystalline Region ◽  
Environmental Legislation ◽  
Ecological Awareness ◽  
Comparative Characterization ◽  
Naoh Treatment

In the field of research and consequent elaboration of biopolymers it has been growing in the last decade, either due to the hardening of the environmental legislation of each country or due to ecological awareness, in any case the term biopolymer is quite broad, these being used as material premium in medicines, food supplements and of course in the production of bioplastics. Since the topic of interest is the comparative characterization of biopolymers using starch extracted from two different cereals, oats and rice, using the alkaline technique with NaOH treatment and the milling technique, assuming that the starch extracted from the Oryza sativa cereal presents chemical characteristics, geometric and mechanical superior in both techniques used unlike the polymers made with Avena sativa starch. These results suggest that the starch quality of each cereal is relevant for the production of biopolymers [1]. The commercially significant properties of starch, such as its mechanical strength and flexibility, depend on the strength and character of the crystalline region, which depends on the ratio of amylose and amylopectin.

Protein Nutritive Quality of Commercial Fish Meals as Assessed by Biological and Chemical Methods

1966 ◽  
Vol 23 (3) ◽  
pp. 395-414 ◽  
Author(s):  
B. E. March ◽  
Jacob Biely ◽  
C. Goudie ◽  
H. L. A. Tarr
Keyword(s):  
Protein Quality ◽  
Practical Importance ◽  
Single Amino Acid ◽  
Commercial Fish ◽  
Biological Assays ◽  
Nutritive Quality ◽  
Biological Tests ◽  
Available Lysine ◽  
Chloroform Methanol

Various chemical characteristics of fish meals pertaining to the protein and lipid components were determined and their relation to different biological estimates of protein quality were studied. The results demonstrated the practical importance of selecting appropriate biological assays in order to avoid underestimating or overestimating protein quality. Pepsin digestibility of the crude protein remaining in the meals after chloroform–methanol extraction was significantly correlated with biological estimates of protein quality. Meals of initially high supplementary protein value declined in value to a greater extent than did meals of lower quality. The level of available lysine present in the meals declined with storage but biological tests indicated that a combination of several amino acids rather than any single amino acid was limiting to supplementary protein value.

PROTEIN QUALITY EVALUATIONS OF COMMERCIAL RAPESEED MEALS BY CHEMICAL AND BIOLOGICAL ASSAYS

1980 ◽  
Vol 60 (2) ◽  
pp. 473-480 ◽  
Author(s):  
Y. K. GOH ◽  
D. R. CLANDININ ◽  
A. R. ROBBLEE
Keyword(s):  
Protein Quality ◽  
Binding Capacity ◽  
Protein Solubility ◽  
Basic Amino Acid ◽  
Laboratory Method ◽  
Biological Assays ◽  
Processing Plants ◽  
Growth Trial

Fourteen commercial rapeseed meals (RSM), selected from a total of 63 samples received from six rapeseed processing plants, and one sample of soybean meal (SBM) were tested for protein quality in a chick growth trial. The RSM studied consisted of six pairs, of which each pair of meals represented the meals with the highest and lowest protein solubilities in 0.2% KOH solution among samples received from each plant and one pair of RSM selected in a similar manner from among a second set of RSM samples supplied by one of the processing plants. The protein solubilities of the RSM used in the growth trial ranged from 33.9 to 72.6%. However, the protein quality of the same meals determined biologically by the total protein efficiency (TPE) method were not significantly different (P < 0.05). The TPE values of the RSM varied from 2.57 to 2.71 and were not significantly different from that of soybeam meal (2.65). These results indicate that determination of protein solubility of RSM in 0.2% KOH solution is not a suitable laboratory method of predicting the protein quality of commercial RSM. Other analyses performed on the RSM samples included determination of basic amino acid composition, available lysine content and dye-binding capacity of protein (DBCP) with Acid Orange 12. Of these analyses, only the DBCP values of the meals were found to be significant (P < 0.05) correlated with the TPE values.

Characterization of Physicochemical Attributes and Muscle Protein Quality of Blue Catfish (Ictalurus furcatus) in Chesapeake Bay

2020 ◽  
Vol 29 (7) ◽  
pp. 616-628
Author(s):  
Yixiang Xu ◽  
Edward Sismour ◽  
Jaron Woods ◽  
Jayjuan M Robinson ◽  
Mzuna Aldossari ◽  
...  
Keyword(s):  
Chesapeake Bay ◽  
Protein Quality ◽  
Muscle Protein ◽  
Ictalurus Furcatus ◽  
Blue Catfish

A Comprehensive Comparative Characterization of Keratinocytes; The Significant Wound Healing Agents

2016 ◽  
Vol 2 (2) ◽  
pp. 3
Author(s):  
Muhammad Irfan-maqsood ◽  
Hojjat Naderi-Meshkin ◽  
Asieh Heirani-Tabasi ◽  
Monireh Bahrami ◽  
Mahdi Mirahmadi ◽  
...  
Keyword(s):  
Wound Healing ◽  
Comparative Characterization

Physicochemical and bacteriological characterization of hospital effluents and their impact on the environment

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Human Health ◽  
Fecal Coliforms ◽  
Chemical Pollution ◽  
Hospital Effluents ◽  
Biological Contaminants ◽  
Almost All ◽  
Direct Discharge ◽  
Significant Chemical

Liquid effluents discharged by hospitals may contain chemical and biological contaminants whose main source is the different substances used for the treatment of patients. This type of rejection can present a sanitary potentially dangerous risk for human health and can provoke a strong degradation of diverse environmental compartments mainly water and soils. The present study focuses on the quality of the liquid effluents of Hassani Abdelkader’s hospital of Sidi Bel-Abbes (West of Algeria). The results reveal a significant chemical pollution (COD: 879 mgO2/L, BOD5: 850 mgO2/L, NH4+ : 47.9 mg/l, NO2- : 4.2 mg/l, NO3- : 56.8 mg/l with respect to WHO standard of 90 mgO2/L, 30 mgO2/L, 0.5 mg/l, 1 mg/l and 1 mg/l respectively). However, these effluents are biodegradable since the ratio COD/BOD5 do not exceeded the value of 2 in almost all samples. The presence of pathogen germs is put into evidence such as pseudomonas, the clostridium, the staphylococcus, the fecal coliforms and fecal streptococcus. These results show that the direct discharge of these effluents constitutes a major threat to human health and the environment.

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