Aquatic Enzymes and Their Applications in the Seafood Industry

2018 ◽  
pp. 65-90
Keyword(s):  
Seafood Industry

Development of Certified Reference Materials for Diarrhetic Shellfish Poisoning Toxins, Part 2: Shellfish Matrix Materials

2016 ◽  
Vol 99 (5) ◽  
pp. 1163-1172 ◽  
Author(s):  
Pearse McCarron ◽  
Kelley L Reeves ◽  
Sabrina D Giddings ◽  
Daniel G Beach ◽  
Michael A Quilliam
Keyword(s):  
Reference Materials ◽  
Matrix Effects ◽  
Certified Reference Materials ◽  
Standard Addition ◽  
Tissue Homogenate ◽  
Shellfish Poisoning ◽  
Diarrhetic Shellfish Poisoning ◽  
Preliminary Work ◽  
Seafood Industry ◽  
Human Illness

Abstract Okadaic acid (OA) and its analogs, dinophysistoxins-1 (DTX1) and -2 (DTX2) are lipophilic biotoxins produced by marine algae that can accumulate in shellfish and cause the human illness known as diarrhetic shellfish poisoning (DSP). Regulatory testing of shellfish is required to protect consumers and the seafood industry. Certified reference materials (CRMs) are essential for the development, validation, and quality control of analytical methods, and thus play an important role in toxin monitoring. This paper summarizes work on research and development of shellfish tissue reference materials for OA and DTXs. Preliminary work established the appropriate conditions for production of shellfish tissue CRMs for OA and DTXs. Source materials, including naturally incurred shellfish tissue and cultured algae, were screened for their DSP toxins. This preliminary work informed planning and production of a wet mussel (Mytilus edulis) tissue homogenate matrix CRM. The homogeneity and stability of the CRM were evaluated and found to be fit-for-purpose. Extraction and LC-tandem MS methods were developed to accurately certify the concentrations of OA, DTX1, and DTX2 using a combination of standard addition and matrix-matched calibration to compensate for matrix effects in electrospray ionization. The concentration of domoic acid was also certified. Uncertainties were assigned following standards and guidelines from the International Organization for Standardization. The presence of other toxins in the CRM was also assessed and information values are reported for OA and DTX acyl esters.

Arsenic removal from groundwater through iron oxyhydroxide coated waste productsA paper submitted to the Journal of Environmental Engineering and Science.

2009 ◽  
Vol 36 (5) ◽  
pp. 881-888 ◽  
Author(s):  
Elsadig A.M. Abdallah ◽  
Graham A. Gagnon
Keyword(s):  
Ferric Oxide ◽  
Arsenic Removal ◽  
Ferric Hydroxide ◽  
Structure Surface ◽  
Seafood Industry ◽  
Isotherm Adsorption ◽  
Scallop Shells ◽  
Glass Recycling ◽  
By Products ◽  
Better Than

The goal of this research was to remove arsenic from groundwater supplies via adsorption into media obtained from waste material generated as by-products from glass recycling programs and the seafood industry such as crushed glass and scallop shells. During the course of this research four new adsorbents were developed: ferric hydroxide coated crushed glass (FHCCG); ferric oxide coated crushed glass (FOCCG); ferric hydroxide coated scallop shells (FHCSS); and ferric oxide coated scallop shells (FOCSS). The adsorbents were characterized through evaluation of their structure, surface area, chemical composition, iron content, and coating stability. Efficiency of the adsorbents to remove arsenic from water was examined through batch kinetic and isotherm adsorption experiments. The adsorption capacity of the adsorbents was also evaluated by performing column experiments using real ground waters and a synthetic water. Arsenic removal to a concentration less than 10 μg/L was achieved with the FHCSS and more than 9000 bed volumes of water were treated before the breakthrough point was reached. The research results revealed that scallop shells coated with ferric hydroxideperformed better than crushed glass coated with ferric hydroxide. Both FOCCG and FOCSS had poor arsenic removal compared with FHCSS and granular ferric hydroxide (GFH). Ferric hydroxide coated scallop shells performed similarly to GFH.

scholarly journals Penentuan Faktor Daya Saing Industri Seafood Menggunakan Five Forces Analysis

2019 ◽  
Vol 23 (2) ◽  
pp. 141-147
Author(s):  
Rosmalina Hanafi ◽  
Musmiana Mendong ◽  
Syarifuddin Parenreng
Keyword(s):  
Bargaining Power ◽  
Supplier Selection ◽  
Gradual Increase ◽  
Export Trade ◽  
Analysis Model ◽  
Expert Choice ◽  
Commodity Export ◽  
Seafood Industry ◽  
Analysis Concept

The seafood industry has experienced a gradual increase in exports each year which has an impact on the high value of competitiveness in companies. PT. Nirvana Niaga Sejahtera is a seafood industry engaged in the tuna commodity export trade. The concept of competitiveness analysis and the best supplier selection used is the Five Forces Analysis concept based on five strength indicators which are incoming company threats, buyers, consumers, substitute product manufacturers, analysis of supplier strengths and AHP methods use expert choice 11 software to produce the company's best supplier. The results of the Five Forces Analysis model show that investor threats to new companies and the number of similar companies can affect the bargaining power of buyers and the quality of suppliers. The selection model using AHP produces alternative for supplier that are Supplier A (Toli-Toli) 0.385, Supplier B (Kendari) 0.322, Supplier C (Ternate) 0.279.

The influence of export information use on export knowledge and performance

2005 ◽  
Vol 23 (2) ◽  
pp. 200-219 ◽  
Author(s):  
Kjell Toften
Keyword(s):  
Export Performance ◽  
Information Use ◽  
Postal Survey ◽  
Export Market ◽  
Market Information ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Content Type ◽  
Seafood Industry ◽  
And Performance

PurposeTo test empirical relationships between export market information use and export knowledge and export performance.Design/methodology/approachConfirmatory factor analysis, using LISREL 8.50, based on a postal survey. The setting selected was the Norwegian seafood industry, mainly consisting of a number of small and medium‐sized firms with a strong export dependency.FindingsThe results indicate that “instrumental/conceptual” use of information positively affects both export knowledge and export performance, while “symbolic” use does not affect either. Export knowledge is found to have no direct influence on export performance in this study.Research limitations/implicationsFor generalisation purposes, longitudinal studies in multiple settings would be preferable to this cross‐sectional survey in a specific setting.Practical implicationsFirms accumulate knowledge and expertise by integrating and incorporating information that has been processed, interpreted and used. This study underscores the importance, for success in export markets, of a commitment to systematically generating, disseminating and responding to export market information. There are clear implications for the management of market intelligence and planning, to enhance the firm's performance.Originality/valueProvides a better understanding of export market information use and its consequences, by integrating it with the concepts of export knowledge and export performance, and testing their structural relations.

scholarly journals Consuming sustainable seafood: guidelines, recommendations and realities

2018 ◽  
Vol 21 (8) ◽  
pp. 1503-1514 ◽  
Author(s):  
Anna K Farmery ◽  
Gabrielle O’Kane ◽  
Alexandra McManus ◽  
Bridget S Green
Keyword(s):  
Health Professionals ◽  
Quantitative Data ◽  
Information Needs ◽  
Cost Effective ◽  
Seafood Consumption ◽  
Dietary Recommendations ◽  
Online Questionnaire ◽  
Trade Offs ◽  
Seafood Industry ◽  
Consumption Advice

AbstractObjectiveEncouraging people to eat more seafood can offer a direct, cost-effective way of improving overall health outcomes. However, dietary recommendations to increase seafood consumption have been criticised following concern over the capacity of the seafood industry to meet increased demand, while maintaining sustainable fish stocks. The current research sought to investigate Australian accredited practising dietitians’ (APD) and public health nutritionists’ (PHN) views on seafood sustainability and their dietary recommendations, to identify ways to better align nutrition and sustainability goals.DesignA self-administered online questionnaire exploring seafood consumption advice, perceptions of seafood sustainability and information sources of APD and PHN. Qualitative and quantitative data were collected via open and closed questions. Quantitative data were analysed with χ2 tests and reported using descriptive statistics. Content analysis was used for qualitative data.SettingAustralia.SubjectsAPD and PHN were targeted to participate; the sample includes respondents from urban and regional areas throughout Australia.ResultsResults indicate confusion around the concept of seafood sustainability and where to obtain information, which may limit health professionals’ ability to recommend the best types of seafood to maximise health and sustainability outcomes. Respondents demonstrated limited understanding of seafood sustainability, with 7·5 % (n 6/80) satisfied with their level of understanding.ConclusionsNutrition and sustainability goals can be better aligned by increasing awareness on seafood that is healthy and sustainable. For health professionals to confidently make recommendations, or identify trade-offs, more evidence-based information needs to be made accessible through forums such as dietetic organisations, industry groups and nutrition programmes.

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