Total Solids and Ether Extract in Fish and Other Marine Products

1964 ◽  
Vol 47 (4) ◽  
pp. 708-710
Author(s):  
H M Risley
Keyword(s):  
Acid Hydrolysis ◽  
Ether Extract ◽  
Total Solids ◽  
Hydrolysis Method ◽  
Canned Tuna ◽  
Canned Fish ◽  
Two Samples ◽  
Marine Products

Abstract The first action rapid modified Babcock method for crude fat in canned fish (18.013) was again studied collaboratively. Two samples of fresh (unfrozen) fish were examined by 6 analysts in 3 different laboratories. The same fish (frozen) together with samples of canned tuna, canned salmon, and a mixture of raw sablefish and canned tuna were examined by a total of 12 analysts in 6 different laboratories. Each analyst also determined fat by the official acid hydrolysis method (18.012). The results show that the rapid modified Babcock method (18.013) has the same degree of reliability as the acid hydrolysis method; it has been rewritten for greater clarity following the suggestions of the collaborators, and the revised form is recommended for adoption as official, final action.

Total Solids and Ether Extract in Fish and Other Marine Products

1963 ◽  
Vol 46 (4) ◽  
pp. 746-748
Author(s):  
H M Risley
Keyword(s):  
Acid Hydrolysis ◽  
Ether Extract ◽  
Total Solids ◽  
Hydrolysis Method ◽  
Canned Fish ◽  
Marine Products ◽  
Frozen Fish

Abstract The first action modified Babcock method for crude fat in canned fish, 18.013, was studied collaboratively on 2 samples of canned fish and 2 samples of frozen fish. The results were compared with those by the official acid hydrolysis method, 18.012. Nine analysts, representing 5 different laboratories, cooperated in the study. The results show that the modified Babcock method has about the same degree of reliability as the acid hydrolysis method. It was recommended that the method be made official, after some slight changes in the wording.

scholarly journals Perfluorinated compounds: occurrence of emerging food contaminants in canned fish and seafood products

2010 ◽  
Vol 28 (No. 4) ◽  
pp. 333-342 ◽  
Author(s):  
P. Hrádková ◽  
J. Poustka ◽  
V. Hloušková ◽  
J. Pulkrabová ◽  
M. Tomaniová ◽  
...  
Keyword(s):  
Analytical Procedure ◽  
Perfluorinated Compounds ◽  
Food Contaminants ◽  
Canned Fish ◽  
Two Samples ◽  
Seafood Products ◽  
Perfluorooctane Sulfonamide ◽  
Contamination Levels ◽  
The Baltic ◽  
Sample Set

The contamination levels of perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS) and perfluorooctane sulfonamide (FOSA), which represent an important subgroup of the environmental contaminants known as perfluorinated compounds (PFCs), were examined in 35 imported canned fish and seafood products (tuna, sardine, cod liver) obtained from the Czech retail market in 2009. An analytical procedure was employed based on a fast and simplified sample preparation using activated charcoal clean-up followed by a LC-MS/MS determinative step. The content of PFOS, which was the dominating pollutant, ranged from 0.7 µg/kg to 12.8 µg/kg, PFOA levels were in the range of 1.2 µg/kg to 5.1 µg/kg, FOSA was detected only at trace levels in two samples. Several products originated in the Baltic Sea were the most contaminated within the sample set.  

Preparation of κ-carra-oligosaccharides with microwave assisted acid hydrolysis method

2015 ◽  
Vol 14 (2) ◽  
pp. 345-349 ◽  
Author(s):  
Guangsheng Li ◽  
Xia Zhao ◽  
Youjing Lv ◽  
Miaomiao Li ◽  
Guangli Yu
Keyword(s):  
Acid Hydrolysis ◽  
Hydrolysis Method ◽  
Microwave Assisted

Rapid Method for Separation of Extraneous Materials from Whole and Degerminated Corn Meal, Prepared Mustard, and Soy Flour

1967 ◽  
Vol 50 (3) ◽  
pp. 505-509
Author(s):  
Mary T Miller
Keyword(s):  
Acid Hydrolysis ◽  
Rapid Method ◽  
Chloride Solution ◽  
Collaborative Study ◽  
Mineral Oil ◽  
Soy Flour ◽  
Corn Meal ◽  
Hydrolysis Method ◽  
Separatory Funnel ◽  
Time Required

Abstract A rapid method, based on acid hydrolysis in the presence of mineral oil, has been developed to separate extraneous materials from whole and degerminated corn meal, prepared mustard, and soy flour. Corn meal may be first examined for rodent excreta by method 36.032 and then examined for light filth, or it may be analyzed directly for light filth by the acid hydrolysis method. Soy flour is prepared for analysis by solubilizing the protein in dilute sodium chloride solution in the presence of mineral oil. The Kilborn separatory funnel is used with all 3 products. The proposed method improves recoveries of insect fragments by 13—34% and rodent hair recoveries hy 25—54%. Analyst time required for actual assay is reduced by at least onethird. The method will be subjected to collaborative study

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