Nair Pereira

Nair Pereira
National University of Mar del Plata | UNMDP · Departamento de Ciencias Marinas

PhD

About

22
Publications
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165
Citations

Publications

Publications (22)
Article
Full-text available
The valorization of fishery byproducts is essential to reduce waste and create high-value products. Waste from Argentine hake (Merluccius hubbsi) could enhance its functional and antioxidant properties through hydrolysis, releasing peptides with bioactive properties. Protein hydrolysates of Argentine hake were produced through autolysis (Aut) and e...
Preprint
Full-text available
Soybean meal (SBM) is the most widely employed vegetable ingredient in aquafeeds, but its rising price and the negative environmental impacts of its cultivation open research efforts for its replacement. More sustainable aquaculture may be achieved by utilizing agricultural and fishery by-products; thus, this study aims to incorporate pea meal (PM)...
Preprint
Full-text available
Soybean meal (SBM) is the most widely employed vegetable ingredient in aquafeeds, but its rising price and the negative environmental impacts of its cultivation open research efforts for its replacement. More sustainable aquaculture may be achieved by utilizing agricultural and fishery by-products; thus, this study aims to incorporate pea meal (PM)...
Article
Full-text available
Los mercados a los que se exporta el langostino Pleoticus muelleri exigen un producto sin presencia de melanosis. El preservante utilizado comúnmente en esta especie es el metabisulfito de sodio (MBS). Hasta el momento no se han estudiado los efectos que podría tener sobre las proteasas del langostino. En este trabajo se evaluó el efecto del MBS so...
Article
Full-text available
Fish processing generates plenty of waste that is directly discarded in open‐air dumps and water sources, or treated in the same way as urban solid waste, causing serious pollution problems. The waste represents a significant source of high‐value bioproducts with potential applications in different industrial processes such as the production of fee...
Article
Full-text available
Proteases from shrimp wastes were characterized and protein hydrolysates were obtained. Shrimp Protein Hydrolysates (SPH) were produced by autolysis (H0) and added 1% (H1) and 2% v/v (H2) enzyme extract of shrimp. The hydrolysis degree was determined using a colorimetric method, the capability of hydrolysates to scavenge free radicals was measured...
Article
Previous studies about enzyme additives for salmonids employed commercial proteases from bacteria, but research obtaining such enzymes from other organisms are scarce. We aimed to increase digestive protease activity in Oncorhynchus mykiss, by analysing potential sources of exogenous proteases generated from different seafood processing waste. To d...
Preprint
Full-text available
Fish processing generates a lot of wastes which are discarded resulting in environmental problems. However, this material represents a significant source of high-value bioproducts with potential biotechnological applications. The objective of this study was to characterize and to compare specific activities of acid and alkaline proteases recovered...
Chapter
The increase in cheese demand, and because calf rennet is relatively expensive, motivated the study of new sources of proteases due to their potential use in biotechnological processes. Crustacean proteases have been considered as good rennet substitutes for milk coagulation during the cheese making process. This chapter summarizes several studies...
Article
Full-text available
In food deprivation assays, several different responses have been observed in crustaceans. However, studying energy reserves utilization among more than one species during the same starvation period has not yet been performed, particularly to discern whether the responses are due to intrinsic and/or environmental factors. We hypothesize that decapo...
Article
Full-text available
The main goal of this research was to analyse in vitro compatibility of Nile tilapia (Oreochromis niloticus) digestive proteinases and enzymes recovered from species comprising fishery waste as Pleoticus muelleri, Artemesia longinaris and Patagonotothen ramsayi. It evaluated the use of exogenous enzymes as feed supplements to increase digestion eff...
Article
Full-text available
Argentina is the seventh largest world producer of cheese. Owing to the profitability of this industry, more than a thousand of dairy companies and farms exclusively produce cheeses, and, thus, this activity utilises 42% of total raw milk production of the country. Due to the increase in cheese demand, and because calf rennet is relatively expensiv...
Article
Full-text available
Vitamins are vital for normal growth and survival of living organisms and they are distributed in feedstuffs in small quantities. This review is focused on the liposoluble vitamins (A, D, E and K) in the diets and metabolic responses of the Argentine penaeoid shrimps Pleoticus muelleri and Artemesia longinaris, distributed along the South American...
Book
Full-text available
La industria procesadora pesquera genera una gran cantidad de subproductos que puede llegar a ser incluso superior al 50% del peso total de la materia prima procesada. Estos residuos son eliminados conjuntamente con los descartes, lo que constituye un serio problema medioambiental, o bien, son destinados a la generación de productos de bajo valor c...
Chapter
Full-text available
Vitamins are important for normal growth and survival of living organisms and they are distributed in feedstuffs in small quantities. There are two groups of vitamins: water-soluble and fat-soluble. The later includes vitamins A, D, E and K. This chapter summarizes several studies carried out with the Argentine penaeoid shrimp species Pleoticus mue...
Article
Full-text available
The presence of immune responses within sea anemone species has received little attention, in comparison with coral species, so we decided to investigate the phenoloxidase and peroxidase activities in ectoderm, endoderm and tentacles of actiniarians Aulactinia marplatensis and Bunodosoma zamponii, the most common species in intertidal zone of Mar d...
Article
Full-text available
The purpose of this study was to evaluate the alkaline phosphatase activity in haemocytes and midgut gland of the penaeid shrimp Artemesia longinaris in relationship with different doses of vitamin D3 in feed and to estimate its potential use as biomarker for nutritional stress. A nine-week trial was carried out with juvenile shrimp in aquaria. Ani...
Conference Paper
Full-text available
Food is the most influential factor in the physiological condition of crustaceans. Liposoluble vitamins are essential to keep the nutritional and sanitary status in perfect conditions; vitamin D 3 is very important for the calcium metabolism. The midgut gland (HP) presents 4 cell types: B, E, F, and R. The last two react with different diets, being...

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Compre un equipo usado, viejito y las perillas no tienen indicaciones

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