scholarly journals Emerging Techniques for Differentiation of Fresh and Frozen–Thawed Seafoods: Highlighting the Potential of Spectroscopic Techniques

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4472 ◽  
Author(s):  
Abdo Hassoun ◽  
Elena Shumilina ◽  
Francesca Di Donato ◽  
Martina Foschi ◽  
Jesus Simal-Gandara ◽  
...  
Keyword(s):  
Shelf Life ◽  
Frozen Storage ◽  
Life Extension ◽  
Detection Methods ◽  
Spectroscopic Techniques ◽  
Muscle Foods ◽  
Seafood Products ◽  
Favorable Conditions ◽  
Analytical Tools ◽  
Non Destructive

Fish and other seafood products have a limited shelf life due to favorable conditions for microbial growth and enzymatic alterations. Various preservation and/or processing methods have been developed for shelf-life extension and for maintaining the quality of such highly perishable products. Freezing and frozen storage are among the most commonly applied techniques for this purpose. However, frozen–thawed fish or meat are less preferred by consumers; thus, labeling thawed products as fresh is considered a fraudulent practice. To detect this kind of fraud, several techniques and approaches (e.g., enzymatic, histological) have been commonly employed. While these methods have proven successful, they are not without limitations. In recent years, different emerging methods have been investigated to be used in place of other traditional detection methods of thawed products. In this context, spectroscopic techniques have received considerable attention due to their potential as being rapid and non-destructive analytical tools. This review paper aims to summarize studies that investigated the potential of emerging techniques, particularly those based on spectroscopy in combination with chemometric tools, to detect frozen–thawed muscle foods.

scholarly journals Assessment of non-destructive spectroscopy and chemometrics tools for the development of green analytical methods to determine the shelf-life of olive oils

2020 ◽  
Vol 183 ◽  
pp. 04003
Author(s):  
Aimen El Orche ◽  
Mohamed Mbarki ◽  
Amine Cheikh ◽  
Mustapha Bouatia
Keyword(s):  
Shelf Life ◽  
Analytical Methods ◽  
Analytical Approach ◽  
Partial Least Square ◽  
Support Vector ◽  
Spectroscopic Techniques ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
Non Destructive

The development of sustainable and environmentally friendly analytical methods for agri-food products and the modification of reference methods is an essential issue to be treated in green analytical chemistry. The potential application of non-destructive spectroscopic techniques with chemometrics tools to achieve these principles are examined in this work. In this study a new sustainable analytical approach based on the use of fluorescence spectroscopy and multivariate analysis methods of Machine-Learning(Support Vector Machine regression) and chemometrics (Partial Least Square regression) have been developed to control the quality of virgin olive oils in Morocco according to their shelf life. The spectral data of 45 samples were first analyzed by principal component analysis method (PCA), the PCA method shows an important classification of the three groups of olive oil according to their shelf life. The use of the regression methods SVM and PLS shows a high ability to predict the quality of olive oils, this ability is shown by the high value of R-square and the low value of root mean square error of calibration and crossvalidation (RMSEC, RMSECV), the validation of these models by cross-validation shows the potential of this sustainable analytical approach in the determination of the quality of virgin olive oils.

6. Shelf-life extension of cheese: frozen storage

2013 ◽  
pp. 87-102 ◽  
Author(s):  
N.B. Alvarenga ◽  
S.P. Ferro ◽  
A.S. Almodôvar ◽  
J. Canada ◽  
I. Sousa
Keyword(s):  
Shelf Life ◽  
Frozen Storage ◽  
Life Extension ◽  
Shelf Life Extension

Thawed Cod Fillets Spoil Less Rapidly Than Unfrozen Fillets When Stored under Modified Atmosphere at 2°C

1998 ◽  
Vol 61 (9) ◽  
pp. 1129-1136 ◽  
Author(s):  
HELLE SKOV GULDAGER ◽  
NIELS BØKNÆS ◽  
CARSTEN ØSTERBERG ◽  
JETTE NIELSEN ◽  
PAW DALGAARD
Keyword(s):  
Shelf Life ◽  
Frozen Storage ◽  
Raw Material ◽  
Photobacterium Phosphoreum ◽  
Life Extension ◽  
Modified Atmosphere ◽  
Modified Atmospheres ◽  
Production And Distribution ◽  
Stable Product ◽  
Spoilage Bacterium

The effect of two months of frozen storage at −20°C on the spoilage characteristics and shelf life of thawed and modified atmosphere packed (MAP) cod fillets stored at 2°C was studied. Thawed MAP cod fillets were compared with fresh cod fillets stored in CO2-containing modified atmospheres with and without added oxygen. The shelf life of 11 to 12 days in the fresh MAP cod was extended to more than 20 days in the thawed MAP cod at 2°C. This shelf life extension was most likely due to the inactivation of the spoilage bacterium Photobacterium phosphoreum during frozen storage as reflected both in Chemical analyses and sensory evaluation. In contrast to fresh MAP cod fillets no significant production of trimethylamine occurred and almost no amine odor and taste were detected during 20 days of chill storage of thawed MAP cod fillets. The use of frozen fillets as raw material not only provides a more stable product in MAP but also allows much greater flexibility for production and distribution. However, a slightly increased concentration of dimethylamine, a larger drip loss, and detection of weak frozen storage flavor were observed in the thawed MAP cod fillets.

X-Ray Tomography for Electronic Packages

2000 ◽  
Author(s):  
Deepak Goyal
Keyword(s):  
3D Imaging ◽  
Development Time ◽  
Analytical Techniques ◽  
Electronic Packages ◽  
X Ray ◽  
Imaging Capability ◽  
Imaging Results ◽  
Key Drivers ◽  
Analytical Tools ◽  
Non Destructive

Abstract Next generation assembly/package development challenges are primarily increased interconnect complexity and density with ever shorter development time. The results of this trend present some distinct challenges for the analytical tools/techniques to support this technical roadmap. The key challenge in the analytical tools/techniques is the development of non-destructive imaging for improved time to information. This paper will present the key drivers for the non-destructive imaging, results of literature search and evaluation of key analytical techniques currently available. Based on these studies requirements of a 3D imaging capability will be discussed. Critical breakthroughs required for development of such a capability are also summarized.

scholarly journals Double-bottom antimicrobial packaging for apple shelf-life extension

2019 ◽  
Vol 279 ◽  
pp. 379-388 ◽  
Author(s):  
Argus Cezar da Rocha Neto ◽  
Randolph Beaudry ◽  
Marcelo Maraschin ◽  
Robson Marcelo Di Piero ◽  
Eva Almenar
Keyword(s):  
Shelf Life ◽  
Life Extension ◽  
Antimicrobial Packaging ◽  
Shelf Life Extension
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