Oxidative Changes in Shell-on-prawns (Pandalus Borealis) During Frozen Storage with and Without Artificial Light

2021 ◽  
Author(s):  
Hanne Jensen ◽  
Charlotte Jacobsen ◽  
Ole Mejlholm ◽  
Lisbeth Hansen ◽  
Niels Bøknæs
Keyword(s):  
Frozen Storage ◽  
Artificial Light ◽  
Pandalus Borealis

scholarly journals Artificial light improves size selection for northern shrimp (Pandalus borealis) in trawls

2021 ◽  
Author(s):  
Ólafur Arnar Ingólfsson ◽  
Terje Jørgensen ◽  
Manu Sistiaga ◽  
Liz Kvalvik
Keyword(s):  
Polynomial Regression ◽  
Red Light ◽  
Green Light ◽  
Significant Loss ◽  
Artificial Light ◽  
Pandalus Borealis ◽  
Size Selection ◽  
Northern Shrimp ◽  
Shrimp Trawl ◽  
Design Changes

Size selection in the northern shrimp (Pandalus borealis) trawl fisheries is a widely studied topic. While the focus has largely been on codend and grid selectivity, studies have shown the importance of other design changes and the application of artificial light to evoke behavioural responses. LED lights of three different colours; green (~470–580 nm), white (~425–750 nm) and red (~580–670 nm), were mounted in the belly section of a shrimp trawl to investigate their influence on the overall selectivity of the trawl. The study was conducted using a twin-trawl setup, one with light and the other without light. For catch-comparison analysis, a polynomial regression with random effects was applied. The number of valid hauls with green, white and red lights were eleven, eight, and nine, respectively. All lights tested significantly affected the length-dependent retention of shrimp. Green light had the greatest effect, red the least. Significant loss was observed for shrimp below 17.5 mm carapace length (CL) for green light, 19.5 mm CL for white and 20.8 mm CL for red light.

Calcium carbonate crystallization in the α-chitin matrix of the shell of pink shrimp, Pandalus borealis, during frozen storage

1997 ◽  
Vol 177 (1-2) ◽  
pp. 125-134 ◽  
Author(s):  
A. Mikkelsen ◽  
S.B. Engelsen ◽  
H.C.B. Hansen ◽  
O. Larsen ◽  
L.H. Skibsted
Keyword(s):  
Calcium Carbonate ◽  
Frozen Storage ◽  
Pink Shrimp ◽  
Pandalus Borealis

Stability of antioxidant vitamins in whole human blood during overnight storage at 4°C and frozen storage up to 6 months

2018 ◽  
Vol 88 (3-4) ◽  
pp. 151-157 ◽  
Author(s):  
Scott W. Leonard ◽  
Gerd Bobe ◽  
Maret G. Traber
Keyword(s):  
Ascorbic Acid ◽  
Whole Blood ◽  
Healthy Subjects ◽  
Frozen Storage ◽  
Blood Collection ◽  
Plasma Samples ◽  
Optimal Conditions ◽  
Plasma Ascorbic Acid ◽  
Blood Samples ◽  
Sample Handling

Abstract. To determine optimal conditions for blood collection during clinical trials, where sample handling logistics might preclude prompt separation of erythrocytes from plasma, healthy subjects (n=8, 6 M/2F) were recruited and non-fasting blood samples were collected into tubes containing different anticoagulants (ethylenediaminetetra-acetic acid (EDTA), Li-heparin or Na-heparin). We hypothesized that heparin, but not EDTA, would effectively protect plasma tocopherols, ascorbic acid, and vitamin E catabolites (α- and γ-CEHC) from oxidative damage. To test this hypothesis, one set of tubes was processed immediately and plasma samples were stored at −80°C, while the other set was stored at 4°C and processed the following morning (~30 hours) and analyzed, or the samples were analyzed after 6 months of storage. Plasma ascorbic acid, as measured using HPLC with electrochemical detection (LC-ECD) decreased by 75% with overnight storage using EDTA as an anticoagulant, but was unchanged when heparin was used. Neither time prior to processing, nor anticoagulant, had any significant effects upon plasma α- or γ-tocopherols or α- or γ-CEHC concentrations. α- and γ-tocopherol concentrations remained unchanged after 6 months of storage at −80°C, when measured using either LC-ECD or LC/mass spectrometry. Thus, refrigeration of whole blood at 4°C overnight does not change plasma α- or γ-tocopherol concentrations or their catabolites. Ascorbic acid is unstable in whole blood when EDTA is used as an anticoagulant, but when whole blood is collected with heparin, it can be stored overnight and subsequently processed.

Artificial Light May Help Explain Obesity Rise

2006 ◽  
Vol 34 (12) ◽  
pp. 58
Author(s):  
TIMOTHY F. KIRN
Keyword(s):  
Artificial Light

Hybrid Lighting Complex for Combined Lighting Systems Research Into Optical Path Optimization Using the Complex "Solar Led-S" New Modification

2018 ◽  
pp. 122-129
Author(s):  
Alexander T. Ovcharov ◽  
Yuri N. Selyanin ◽  
Yaroslav V. Antsupov
Keyword(s):  
Light Transmission ◽  
Optical Path ◽  
Artificial Light ◽  
Solar Panels ◽  
Shopping Centre ◽  
Systems Research ◽  
Lower Stage ◽  
Input Structure ◽  
Lighting Systems ◽  
Two Stages

A new concept of the architecture of hybrid lighting systems for installations of combined lighting is considered. The cascade principle of constructing the optical path of such complexes is described, in which the design contains two stages of the cascade: the upper and lower stages. The upper (input) structure is made on the basis of the corresponding modification of the hollow tube “Solatube®” (daylight), and the lower one, based on the “Solatube®” fibre of a larger diameter, is combined with LED artificial light block and is designed to transmit mixed light (daylight and artificial light). The results of studies on the efficiency of light transmission made it possible to optimize the solution of the new modification of the hybrid lighting complex “Solar LED”, lower stage of the cascade, and to develop the nomenclature of the production line “S”. The description of the first experience of using this complex in the pilot combined illumination system of the “meeting room” in the shopping centre “IKEA Belaya Dacha” headquarters is given. A completely autonomous power supply system for a lighting installation based on solar panels has been implemented.

Processing Properties of Beef Clod Muscles as Affected by Electrical Stimulation and Post-Rigor Frozen Storage

1982 ◽  
Vol 54 (5) ◽  
pp. 964-969 ◽  
Author(s):  
R. N. Terrell ◽  
J. A. Jacobs ◽  
J. W. Savell ◽  
G. C. Smith
Keyword(s):  
Electrical Stimulation ◽  
Frozen Storage ◽  
Processing Properties
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