Abstract
In general, anchovy is marketed in dried form in almost all traditional markets. The quality of marketed fish changes based on space and time. The purpose of this research is to determine ...the quality of dry salted anchovy (
Stolephorus sp
.) based on organoleptic tests and formalin content at the Sawojajar market. The method used is a case study. Samples were taken randomly at the Sawojajar market, then tested at the Cirebon KIPM Station laboratory. Data analysis was carried out by comparing the results of formalin and organoleptic tests according to SNI 2346-2015 on dried salted anchovy. The results showed that all samples did not contain formalin and the organoleptic test showed that the value in sample I was 5 in II and III, the same value was 6. The organoleptic value of the three samples of salted dried anchovy was still below the SNI threshold, while the organoleptic value of salted dried anchovies was 7 (SNI 23462015).
This study was aimed to investigate the effectiveness of activated carbon on reduction in biogenic amines (BAs) via two-stage adsorption process at industrial scale, and the consequent effect was ...evaluated by the taste and aroma of anchovy fish sauce. Through reaction surface methodology, the optimal working paratmeters were determined to adsorbent composition of 2% activated carbon and 0.9% diatomite under temperature of 27 °C for 97 min. Upon optimized settings at industrial scale, there were effective reductions in tryptamine (by 100%), cadaverine (by 10%), histamine (by 61%), and tyramine (by 96%), while the changes in taste-related amino nitrogen, total nitrogen, free amino acids, and color were minimum. In addition, off-flavor-causing compounds, such as alcohols and acids, were removed by the developed method. From the obtained results, the activated carbon-based two-stage adsorption approach can provide the framework for control of BAs contents in fish-based sauces or stocks at commercial and industrial scales.
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•Activated carbon removes biogenic amines, including histamine, from fish sauce.•The physico-chemical properties of activated carbon minimize off-flavors.•Two-stage adsorption can efficiently remove biogenic amines at industrial-scale.
A fast automatic new method, the "spray technique", for the separation of fish eggs from plankton samples has been developed; each egg-sorting procedure requires less than 3 min (removal of zero up ...to hundreds of eggs). A targeted accuracy can be achieved by repeating the procedure. The spray method can be easily applied onboard research vessels and it appears to cope well with different plankton compositions. Tests suggest that the method is 25, 60 and 110 times faster than the traditional manual method when using samples with low, medium and high plankton content. Sorted egg fractions contain less contamination by plankton particles than with the manual method. This new method is much less prone to human error and can be standardised. However, as plankton samples vary, it is crucial to estimate regularly the accuracy of the sorting. The method should only be used with standard operating procedures and pre-determined accuracy targets. Accuracy can be estimated afterwards by sorting thoroughly; checking whether any eggs had been left.
Anchovy population expansion in the North Sea Petitgas, Pierre; Alheit, Jürgen; Peck, Myron A. ...
Marine ecology. Progress series (Halstenbek),
01/2012, Volume:
444
Journal Article
Peer reviewed
Open access
The abundance and spatial occupation of European anchovyEngraulis encrasicolushave increased in the North Sea since the mid-1990s. We use a cross-disciplinary approach combining genetics, transport ...modelling, survey time series analyses and physical oceanographic modelling to investigate 3 hypotheses on the reasons for this change. Evidence from connectivity studies suggests that the population of North Sea anchovy is separate from that in the Bay of Biscay. The recruitment pulses observed in survey data fit a life cycle which includes spawning in early summer and larval development in late summer. This also supports the concept of population expansion originating from local remnant population(s). In terms of growth physiology, suitable thermal windows have expanded, making conditions more favourable for life cycle closure and population persistence/productivity. In addition to the increased frequency of warm summers, which favour larvae and juvenile growth, the decrease in the number of severe winters is also likely to improve overwinter survival. Overall, the evidence supports the hypothesis that the increase in anchovy abundance originated from the improved productivity of existing populations. This increase was associated with an expansion in thermal habitats and is probably not due to a northward shift in the distribution of southern conspecifics.
•We present a global study of small pelagic fish body condition in the Mediterranean.•Fish body condition strongly declined during last decades in almost all studied areas.•Body condition did not ...vary in synchrony between areas in the Mediterranean Sea.•Well-marked environmental differences between sub-regions were highlighted.•This decline in the condition may have negative effects on ecosystems and fisheries.
Small pelagic fish are among the most ecologically and economically important marine fish species and are characterized by large fluctuations all over the world. In the Mediterranean Sea, low catches and biomass of anchovies and sardines have been described in some areas during the last decade, resulting in important fisheries crises. Therefore, we studied anchovy and sardine body condition variability, a key index of population health and its response to environmental and anthropogenic changes. Wide temporal and spatial patterns were investigated by analyzing separately data from scientific surveys and fisheries in eight Mediterranean areas between 1975 and 2015.
Results showed that anchovy and sardine body condition as well as maximum size in some areas sharply decreased in most Mediterranean areas along years (except in the Northern Alboran Sea). Despite this general pattern, well-marked environmental differences between sub-regions were highlighted by several analyses and variations in body condition were not found to be homogeneous over all the Mediterranean Sea. Further, other analyses revealed that except for the Adriatic where major changes towards a lower body condition were concomitant with a decrease in river runoffs and chl-a concentration, no concomitant environmental regime shift was detected in other areas.
Together, these analyses highlighted the current poor body condition of almost all small pelagic fish populations in the Mediterranean. Yet, global environmental indices could not explain the observed changes and the general decrease in condition might more likely come from regional environmental and/or anthropogenic (fishing) effects. A prolonged state of poor fish body condition, together with an observed reduced size and early age-at-maturity may have strong ecological, economic and social consequences all around the Mediterranean Sea.
Summary
Hair‐fin anchovy (Setipinna tenuifilis) is an economically important fish distributed in the West Indian Ocean and the Northwest Pacific Ocean. In this study, 154 individuals in eight ...populations of S. tenuifilis were sequenced and 850 million raw reads were obtained using restriction site‐associated DNA sequencing (RAD‐seq). First, we identified 14 012 044 hypothetical SNP markers. A dataset of 199 903 high‐quality SNPs was collected after further screening. These SNPs have a strong ability to test the genetic diversity between the eight populations. The differentiation and genetic law between samples were explored based on SNPs in populations of S. tenuifilis. The results of this study will provide data for protecting the genetic resources of the species.
Identification of the potential habitat of European anchovy (Engraulis encrasicolus) at different life stages in relation to environmental conditions is an interesting subject from both ecological ...and management points of view. For this purpose, acoustic data from different seasons and different parts of the Mediterranean Sea along with satellite environmental and bathymetry data were modelled using generalized additive models. Similarly, egg distribution data from summer ichthyoplankton surveys were used to model potential spawning habitat. Selected models were used to produce maps presenting the probability of anchovy presence (adults, juveniles and eggs) in the entire Mediterranean basin, as a measure of habitat adequacy. Bottom depth and sea surface chlorophyll concentration were the variables found important in all models. Potential anchovy habitats were located over the continental shelf for all life stages examined. An expansion of the potential habitat from the peak spawning (early summer) to the late spawning season (early autumn) was observed. However, the most suitable areas for the presence of anchovy spawners seem to maintain the same size between seasons. Potential juvenile habitats were associated with highly productive inshore waters, being less extended and closer to coast during winter than late autumn. Potential spawning habitat in June and July based on ichthyoplankton surveys overlapped but were wider in extent compared with adult potential habitat from acoustics in the same season. Similarities and dissimilarities between the anchovy habitats as well as comparisons with sardine habitats in the oligotrophic Mediterranean Sea and other ecosystems with higher productivity are discussed.
In this study, metal compositions in anchovy (Engraulis encrasicolus) sampled from 11 different sites representing Turkey, Georgia, and Abkhazia coasts of the Black Sea were investigated. For this ...purpose, micro (Al, Zn, Mn, Co, Cr, Cu, Fe, Ni, Cd, Pb, Se, As, and Hg) and macro (K, Ca, Na, Mg, P) element content in edible muscle tissue of anchovy were determined. In addition, the potential risks associated with human consumption of the samples were evaluated using quality indices such as estimated weekly intake (EWI), target hazard quotient (THQ), and total exposure hazard index (HI). The results showed that the potassium (K) concentration was the highest in edible tissue of the anchovies from all stations. Anchovies were also found to be rich in phosphorus and calcium. When the metal content of anchovies was compared, there were statistically variations among metal concentrations (except for Co, Ni, Cu, Cr, Cd, Pb, and Hg) in the muscle tissue of anchovies according to the stations (P<0.05). The concentrations of Pb, Cd, Zn, Cu, Ni, and Cr in anchovy were found below the maximum permissible values determined by various national and international organizations for seafood. Besides, when the samples were examined in terms of EWI, THQ, and HI quality indices, it was determined that anchovy consumption did not pose a potential hazard to human health for the consumption of the anchovy. The present study conclusively indicated that no health problem can be raised from human consumption of the examined commercial anchovy along the Turkey, Georgia, and Abkhazia coasts of the Black Sea.
•Metal concentration in anchovy from the South Black Sea coasts were investigated.•Metal concentrations in anchovy were found below the maximum permissible values.•There is no potential health risk due to the consumption of anchovy.•The THQ and HI of anchovy samples value is less than 1.•Anchovy consumption did not pose a potential hazard to human health.
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