Open Access Original Research Article

Effect of Red Ginger Essential Oil (Zingiber officinale Var. Rubrum) Addition on Chitosan Based Edible Coating towards Organoleptic Characteristics Pempek

Nabila Ayu Pratiwi, Iis Rostini, Ayi Yustiati, Rusky Intan Pratama

Asian Journal of Fisheries and Aquatic Research, Page 1-9
DOI: 10.9734/ajfar/2021/v15i530340

This study aims to determine the best concentration of red ginger essential oil addition (Zingiber officinale var. Rubrum) edible coating to chitosan on the organoleptic quality of pempek. The research method was experimental which consisted of 5 treatments, namely control, addition of red ginger essential oil with concentrations of 0%, 0.5%, 1%, and 1.5% with 20 panelists as replicates. Parameters observed included organoleptic characteristics (appearance, texture, aroma, taste, tooth test, and folding test) based on the panelists' preference level using hedonic tests and chemical analysis (moisture content and fat content) and the shelf life of pempek. The data from the water content and fat content tests were analyzed descriptively, while the organoleptic test results were analyzed using non-parametric statistics with the test Friedman, if the test Friedman gave a rejection, multiple comparisons were performed and test was performed Bayes for decision making. The results showed that the best treatment in extending the shelf life of pempek was treatment D with the addition of 1% red ginger essential oil with a moisture content of 55.30% on the first day and 55.31% on the fourth day. While the fat content on the first day was 1.42% and on the fourth day it rose to 2.72% with the characteristics of appearance, texture, aroma, and taste still favored by the panelists.

Open Access Original Research Article

Analysis of Gastropod Diversity as a Bioindicator of Waters in Situ Ciburuy Padalarang, West Bandung Regency, West Java, Indonesia

Erwin Theofilius, Zahidah Hasan, Asep Agus Handaka, Herman Hamndani

Asian Journal of Fisheries and Aquatic Research, Page 10-19
DOI: 10.9734/ajfar/2021/v15i530341

This study conducted to determine the water quality of Situ Ciburuy based on the structure of the gastropod community as a bioindicator. The survey method used in this study based on collecting data directly at the research area (purpose sampling method).  For instance, species and density of gastropods were descriptively analyzed, using diversity index and evenes index. For instance, The findings showed that level of water quality in  Situ Ciburuy based on gastropods bioindicators was lightly polluted. That is indicated by the low to moderate diversity of gastropods, which ranges from 1.31-1.98. The Shannon evenness index (0,73-0.95) revealed low gastropod species diversity in Situ Ciburuy, indicating low evenness of gastropod in Situ Ciburuy.

Open Access Original Research Article

Determination of Some Heavy Metals in Cultured Nile Tilapia (Oreochromis niloticus) in Western Kordofan State, Sudan

O. A. Idam, M. Rowaida S. Musa, Ramy A. Yousif

Asian Journal of Fisheries and Aquatic Research, Page 20-29
DOI: 10.9734/ajfar/2021/v15i530342

The current study was conducted in two different localities have been selected in Western Kordofan State (Elsonout and Abu-zabad Localities) to evaluate some heavy metals concentrations (Copper, Cadmium, Zinc, and Lead) in three parts (liver, gills and muscles) of Nile Tilapia (Oreochromis niloticus) cultured in Dams, also to evaluate the same heavy metals concentrations in Dams water where Nile Tilapia is cultured. The evaluation was included the correlation of heavy metals accumulation between fish organs and water samples were compared. Finally, the results were compared with recommended levels by FAO, WHO and other international organizations. A total of 54 samples has been taken from marketable size Nile Tilapia parts (gills; livers and muscles) and subjected to analysis of heavy metals accumulations. Also, a total of 18 water samples were taken from Dams (shallow, middle and deep water). The data was subjected to SPSS using ANOVA. The findings of this work were revealed that, there were a highly significant differences (P≤0.01) in all heavy metals among gills, liver and muscles of Nile Tilapia cultured in Dams. And there was a highly significant difference (P≤0.01) in all heavy metals among gills, liver and muscles of Nile Tilapia according to localities. Anyway, when compared fish organs; we found that, gills were recorded the maximum figures in all heavy metals followed by livers and the minimum figures were recorded by muscles. The results of this study were in the permissible levels recommended by international organizations.

Open Access Original Research Article

Analysis of Competitiveness Fisheries Processing Industry in Indonesia

Asep Agus Handaka Suryana, Dien Hasna Amalia

Asian Journal of Fisheries and Aquatic Research, Page 30-42
DOI: 10.9734/ajfar/2021/v15i530343

The fisheries sector is an important sector for the people of Indonesia and can be used as a prime mover for the national economy. Indonesia is a country that has a fairly high level of fish production every year, that Indonesia provides a large supply of fish for foreign countries. This study aims to analyze the competitiveness of the provincial fisheries processing industry in Indonesia. The study was conducted in February – June 2021. The method used was a literature survey to determine the competitiveness of the fisheries processing industry in 34 provinces in Indonesia. After all the data is processed, the data will be analyzed descriptively. Primary data are expert judgments consisting of 11 people regarding the proportion of competitiveness of the fishery processing industry. Secondary data in the form of statistical data on the Indonesian Fisheries Processing Industry in 2010-2017 Ministry of Maritime Affairs and Fisheries. The results showed that the competitiveness profile of the fishery processing industry in 2017 in Indonesia with the first rank of very high competitiveness was occupied by the Province of East Java because it excels in production, infrastructure, and Science and Technology the second rank is very high competitiveness. occupied by DKI Jakarta Province because it excels in production and science and technology, the third rank of very high competitiveness is occupied by Central Java Province because it excels in production and infrastructure.

Open Access Original Research Article

Benefits in the Tilapia Growth, by Vetiver Grass in an Aquaponics System

J. Guillermo Galindo Reyes

Asian Journal of Fisheries and Aquatic Research, Page 43-54
DOI: 10.9734/ajfar/2021/v15i530344

Tilapia aquaculture has growing vertiginously in the world, reaching 7.02 million tons in 2020. In Mexico, the same year reached 72.6 thousand tons. This production values have increased environmental impact and production costs. In Mexico there is a pre-Hispanic aquaponics system, where people culture corn, bean fishes and other organisms. Taken this system as basis, the aim this work was demonstrate the benefits in tilapia aquaculture, by Vetiver grass. Three mini-ponds make up by tilapia juveniles and Vetiver in aquaponics system, and one mini-pond without Vetiver, were cultured during ten weeks. The ammonia, nitrates, dissolved O2, pH etc., and also tilapia weights were recorded along experiment. Results indicated that, ammonia decreased, nitrate increased and tilapia weight increased significantly in mini-ponds with Vetiver than without Vetiver. A von Bertalanffy simplified model was used to calculate time required for tilapias reached 500 g (commercial size) with Vetiver and without Vetiver; it was 48.6 and 54.4 weeks respectively. An extrapolation to commercial tilapia aquaculture, will decreased production cost, due to lower amount of feed and water in tilapia hatcheries; also, a lower environmental impact by wastes discharged to coastal ecosystems, e.g., the amount of ammonia produced in mini-ponds with Vetiver was 4.56 times less than mini-pond without Vitier at week ten. Moreover, tilapia culture with Vetiver, have an aggregated value, because Vetiver is used in perfumes production, reaching 45.2 billons US dollars in 2020.