Encarnacion Emilia Santos Yap

University of the Philippines Visayas | UPV · College of Fisheries and Ocean Sciences

For this study, microwave vacuum drying (MVD) was combined with ultrasound-assisted extraction to compare the effects of different ethanol volumes on ponkan extract and to evaluate the total phenolic content (TPC), total flavonoid content (TFC), and total ascorbic acid content (TAAC). High-performance liquid chromatography with photodiode array det...

A significant amount of raw material is produced as a byproduct of fish processing, much of which is used as lowvalue fertilisers, animal feed, or simply discarded. In searching for ways to maximise utilisation of fish resources, a simple and inexpensive alternative is to render these fish wastes into nutritious silage. This article1 discusses stud...

A significant amount of fish by-products is produced during fish processing. These by-products represent 20–80 percent of the fish and provide a good source of macro- and micronutrients. Yet they often go unutilized, when they can easily be converted into a variety of products including fishmeal and oil, fish hydrolysates, fish collagen, fish sauce...

Chlorella sorokiniana protein isolates were enzymatically hydrolyzed using pepsin, bromelain, and thermolysin, with their molecular characteristics and bioactivities determined. Thermolysin hydrolysates exhibited the highest degree of hydrolysis (18.08% ± 1.13%). The sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS‐PAGE) results showe...

Chlorella is one of the most nutritionally important microalgae with high protein content and can be a good source of potential bioactive peptides. In the current study, isolated proteins from Chlorella sorokiniana were subjected to in silico analysis to predict potential peptides with biological activities. Molecular characteristics of proteins we...

The egg mass of the wedge seahare Dolabella auricularia has been gathered as human food for quite a long time without knowing its nutritional composition. Thus, this study was conducted in order to determine some nutritional aspects of the egg mass as basis of its utilization as human food. Important composition of the egg mass that were determined...

The biodegradation of taste and odour compounds, 2-methylisoborneol (2-MIB) and geosmin, was investigated using bacteria isolated from an earthen fish pond. A simple enrichment technique was used with 2-MIB and geosmin serving as the sole carbon source. Two isolates, Pseudomonas sp. and Bacillus cereus from pond water and sediment, were identified...

The chapter discusses the present status and trends of potential nutraceuticals and functional foods from fishery by-products in the Philippines. The discussion starts with a brief introduction on the present status of the industry wherein the different post harvest handling and processing methodologies that are presently being used in transforming...

A study on the specific sensorial threshold levels of two common off-flavour compounds in water systems (geosmin and 2-methylisoborneol) was done through a series of sensory evaluation tests. Two different threshold levels were determined namely: the absolute or detection threshold level and the terminal or saturation threshold level, individually...

A study on the reduction of off-flavour compounds that cause "earthy" and "musty" organoleptic sensorial characteristic in fresh water systems was conducted. These compounds include geosmin and 2-methylisoborneol (MIB), which are produced as metabolites by some algal and bacterial species. Drinking water and aquaculture commodities affected by thes...

A survey on the nemertean fauna in the Philip-pines conducted from 2004 to 2006 in Panay, Negros, and Cebu Islands yielded (or revealed) six species, including one palaeonemertean, one pilidiophoran, three monostiliferans, and one reptantic polystiliferan. They were not yet identified to the species level, represented as Callinera sp., Pilidiophora...

The quality changes during frozen storage of two underutilized species of fish: mackerel (Scomber scombrus), a fatty species, and white hake (Urophycis tenuis) a nonfatty, gadoid species, with or without a bag, vacuum, and/or erythorbic acid, were measured using the dimethy-lamine (DMA) test for hake and the thiobarbituric acid (TBA) test for macke...

Seven dinucleotide and one tetranucleotide microsatellite loci were isolated and characterized , using routine protocols, from the blue swimmer crab, Portunus pelagicus. These loci will be useful for investigating the population structure of this broadly distributed and economically important portunid. In particular, all eight loci were polymorphic...

Keywords:Acanthopagrus butcheri;estuaries;microsatellite polymorphism;Sparidae

Spoilage starts as soon as a fish dies as a result of a complex series of chemical, physical, bacteriological, and histological changes that occur in the muscle tissue. These interrelated processes are usually accompanied by the gradual loss or development of different compounds that affect fish quality. These quality changes are influenced by m...

The sarcoplasmic proteins of Nemipterus peronii were electrophoretically analyzed using the isoelectric focusing (IEF) technique. A plumorphic zone at pH 3.69-3.79 was observed, giving three phenotypes: A, AB, and B. The expected frequencies of the occurrence of each of the phenotypes, according to the Hardy-Weinberg Law, agreed with the observed f...

Thesis (M.S.)--Cornell University, May, 1988. Bibliography: leaves 227-240.