Proximate Analysis of Pacific Herring (Clupea pallasii) and an Evaluation of Tester's "Fat Factor"

1959 ◽  
Vol 16 (5) ◽  
pp. 679-684 ◽  
Author(s):  
J. R. McBride ◽  
R. A. MacLeod ◽  
D. R. Idler
Keyword(s):  
Seasonal Variations ◽  
Oil Content ◽  
Proximate Analysis ◽  
Ash Content ◽  
Pacific Herring ◽  
Average Deviation ◽  
Clupea Pallasii

Samples of Pacific herring (Clupea pallasii) were obtained from commercial catches made at approximately monthly intervals for a period of a year. These samples were analysed for their water, oil, protein and ash content. The seasonal variations obtained in the analytical values in general confirmed those observed previously for this species of fish.When Tester's "fat factor" determined by dividing the weight of the fish by its weight in water was used to calculate the oil content of herring, the average deviation of the calculated oil content from that determined experimentally was 15% and the range of deviation was 2 to 49%. Use of the "fat factor" as a practical means of determining the oil content of herring is not recommended.

scholarly journals Effect of Different Drying Methods on the Nutritional Value of Hibiscus sabdariffa Calyces as Revealed by NMR Metabolomics

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1675
Author(s):  
Sengnolotha Marak ◽  
Elena Shumilina ◽  
Nutan Kaushik ◽  
Eva Falch ◽  
Alexander Dikiy
Keyword(s):  
Nutritional Value ◽  
2D Nmr ◽  
Proximate Analysis ◽  
Ash Content ◽  
Drying Methods ◽  
Hibiscus Sabdariffa ◽  
Nmr Metabolomics ◽  
Polar Metabolites ◽  
2D Nmr Spectra ◽  
Plant Processing

Red mature calyces of Hibiscus sabdariffa were collected from 16 different locations in Meghalaya, India. Samples were processed using shade drying (SD) and tray drying (TD). NMR spectroscopy was used to assess the metabolic composition of the calyces. In this study, 18 polar metabolites were assigned using 1D and 2D NMR spectra, and 10 of them were quantified. Proximate analysis showed that the TD method is more efficient at reducing moisture and maintaining the ash content of the Hibiscus biomass. NMR metabolomics indicates that the metabolite composition significantly differs between SD and TD samples and is more stable in TD plant processing. The differences in post-harvest drying has a greater impact on the metabolite composition of Hibiscus than the plant location.

Pacific herring (Clupea pallasii) consumption by marine birds during winter in Prince William Sound, Alaska

2015 ◽  
Vol 24 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Mary Anne Bishop ◽  
Jordan T. Watson ◽  
Kathy Kuletz ◽  
Tawna Morgan
Keyword(s):  
Pacific Herring ◽  
Prince William Sound ◽  
Marine Birds ◽  
Clupea Pallasii

Proximate Analysis of British Columbia Herring in Relation to Season and Condition Factor

1939 ◽  
Vol 4b (5) ◽  
pp. 478-490
Author(s):  
John Lawson Hart ◽  
Albert L. Tester ◽  
Desmond Beall ◽  
John P. Tully
Keyword(s):  
British Columbia ◽  
Oil Content ◽  
Condition Factor ◽  
Calorific Value ◽  
Proximate Analysis ◽  
Early Spring ◽  
Different Seasons ◽  
Spawning Time ◽  
Average Condition ◽  
The Individual

Analysis by standard methods of samples of Clupea pallasii from different seasons and localities in British Columbia showed the following ranges in composition: water, 64.2 to 80.2%; oil, 4.1 to 19.4%; protein, 10.1 to 16.8%; ash, 1.9 to 2.8%. Oil content is highest in summer, declines during the fall and winter, and falls to a minimum after spawning time in early spring. There is an accompanying decline in the weight of the fish. Herring are highly variable in calorific value (2.41 to 0.94 Calories per gram). Potential oil yields on reduction as high as 30 gallons per ton are indicated with a minimum of 7 gallons per ton. Average condition factors for samples were determined by averaging the individual condition factors obtained from [Formula: see text], when C is the condition factor, W is weight in grams, L is length in millimetres, and 3.26 is the exponent in the empirically fitted equation W = CLn. This condition factor was found to be positively correlated with oil content and to follow in general the same seasonal trend.

Testicular development and serum profiles of steroid hormone levels in captive male Pacific herring Clupea pallasii during their first maturational cycle

2002 ◽  
Vol 68 (5) ◽  
pp. 1099-1105 ◽  
Author(s):  
YASUNORI KOYA ◽  
KIYOSHI SOYANO ◽  
KAZUHISA YAMAMOTO ◽  
HIROYUKI OBANA ◽  
TAKAHIRO MATSUBARA
Keyword(s):  
Steroid Hormone ◽  
Testicular Development ◽  
Pacific Herring ◽  
Clupea Pallasii ◽  
Hormone Levels

The Development of the Vertebral Column of the Pacific Herring (Clupea pallasii)

1940 ◽  
Vol 5a (1) ◽  
pp. 11-22 ◽  
Author(s):  
Agnes M. Gwyn
Keyword(s):  
Vertebral Column ◽  
Clupea Harengus ◽  
Pacific Herring ◽  
Embryological Development ◽  
Vertebral Number ◽  
Clupea Pallasii ◽  
Additional Information ◽  
The Pacific

Embryological development is followed over a period of ten weeks after hatching. The mode of formation of the components of the vertebral column is compared with that in Clupea harengus, and is described in detail where differences are observed or additional information is available. Development appears essentially similar in the two species, although in general more rapid relative to length in C. pallasii. At hatching, myotome formation is complete and the ultimate vertebral number of an individual is presumably determined by that time. During ossification of the vertebral column, complex growth gradients from one or more centres are observed.

Sperm-activating proteins from unfertilized eggs of the Pacific herring, Clupea pallasii

1995 ◽  
Vol 37 (3) ◽  
pp. 257-261 ◽  
Author(s):  
Shoji Oda ◽  
Yoshihiko Igarashi ◽  
Hideki Ohtake ◽  
Kosuke Sakai ◽  
Nobuyoshi Shimizu ◽  
...  
Keyword(s):  
Pacific Herring ◽  
Clupea Pallasii ◽  
The Pacific
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