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INDONESIA
Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology
Published by Pusat Litbang Daya Saing Produk dan Bioteknologi Kelautan dan Perikanan
ISSN : 20895690     EISSN : 24069272     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology
Squalen publishes original and innovative research to provide readers with the latest research, knowledge, emerging technologies, postharvest, processing and preservation, food safety and environment, biotechnology and bio-discovery of marine and fisheries. The key focus of the research should be on marine and fishery and the manuscript should include a fundamental discussion of the research findings and their significance. Manuscripts that simply report data without providing a detailed interpretation of the results are unlikely to be accepted for publication in the journal.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 18, No 3 (2023): December 2023" : 6 Documents clear
Spatio-Seasonal Habitat Suitability Model of Anisakis spp. in Chub Mackerel (Scomber Japonicus) as a Scientific-Based Approach to Provide Safety Assessment Policy of Fisheries Product in Indonesia Hidayah, Izhamil; Sutomo, Sutomo; Pujiono, Eko; Saputra, Muhammad Hadi; Humaida, Nida; Januar, Hedi Indra; Anggraeni, Yusnita Mirna; Puspasari, Herti Windya; Triwibowo, Radestya; Rachmawati, Novalia; Iswani, Sri; Yennie, Yusma; Santoso, Agung
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 18, No 3 (2023): December 2023
Publisher : :Agency for Marine and Fisheries Research and Human Resources, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.804

Abstract

The infestation of Anisakis spp. in Chub mackerel (Scomber japonicus) may have significant health and socioeconomic implications. Understanding the spatio-seasonal occurrence of Anisakis spp. in its host, S. japonicus, is crucial ecologically and for effective management. This research aimed to develop a predictive map (spatial-seasonal patterns) for Anisakis’s infestation in S. japonicus using the maximum entropy (MaxEnt) algorithm. Anisakis spp. and S. japonicus occurrences were obtained through a comprehensive Bibliographic analysis of the Scopus database (2017-2022) and the Ocean Biodiversity Information System (OBIS) database to collect the necessary data. Environmental predictors were sourced from the Global Marine Environment Data. The resulting model demonstrated a reliable performance, as indicated by an Area Under Curve (AUC) value on the Receiver Operating Characteristic (ROC) chart exceeding 0.8. The findings of this study revealed that the infestation of Anisakis spp. in S. japonicus is projected to be more prevalent during the fourth quarter of each year. Furthermore, the environmental factors influencing the infestation were identified as diffuse attenuation, water depth, and distance from the coast. These research outcomes can be a foundational reference for developing an effective control system for inspecting fresh or frozen fish within the quarantine department. By utilizing the spatial-seasonal patterns and environmental predictors identified in this study, authorities can implement targeted measures to prevent and mitigate the infestation of Anisakis spp. in S. japonicus, safeguarding public health and maintaining the quality of fish products.
Influence of Salinity on The Growth and Fatty Acids Production of Euglena sp. Local Strain from Dieng Plateau, Indonesia Amelia, Ria; Budiman, Arief; Nugroho, Andhika Puspito; Suyono, Dr. Eko Agus
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 18, No 3 (2023): December 2023
Publisher : :Agency for Marine and Fisheries Research and Human Resources, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.812

Abstract

High salinity is a challenging environmental stressor for organisms to adapt to. In this work, the effects of added NaCl and KCl at various concentrations (0, 100 mM, and 200 mM) for 13 days in the growth medium were investigated in relation to the physiological, morphological, and proximate content of Euglena sp. Utilizing gas chromatography (GC), the amount of fatty acid methyl esters (FAMEs) was determined. Euglena sp. exhibited an obvious decline in growth rate and photosynthetic pigment with increasing salinity. Biomass, protein, carbohydrates had the highest quantities in KCl 100 mM medium, measuring 0.586 ± 0.096 mg/mL, 0.050 ± 0.00017 mg/mL, and 968.091 ± 81.197 mg/mL, respectively. The treatment with 200 mM NaCl had the highest lipid content, with a lipid concentration of 0.42 ± 0.060 mg/mL. After being cultivated in NaCl and KCl at a 200 mM concentration, respectively, the amount of polyunsaturated fatty acids (PUFAs) declined and the amount of saturated fatty acids (SFAs) increased in Euglena sp. The percentage of PUFAs, such as methyl linoleate and methyl linolenate, did not surpass the European B100 biodiesel standard limit of 12% (weight), despite the wide variety of PUFAs. It showed that the use of NaCl and KCl during salt stress significantly increases Euglena sp. biofuel production. For this reason, cultivating Euglena sp. at high salinity is suitable for producing biofuels.
Characterization and Effect of Processing on Parvalbumin Content in Indonesian Shortfin Eel (Anguilla Bicolor-bicolor) Mahardika, Vania; Nurilmala, Mala; Nurjanah, Nurjanah; Pertiwi, Rizsa Mustika; Nugraha, Roni
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 18, No 3 (2023): December 2023
Publisher : :Agency for Marine and Fisheries Research and Human Resources, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.851

Abstract

Indonesian shortfin eel (Anguilla bicolor bicolor) is a high economic value fish and a high nutritional content. However, their utilization can be limited because of hypersensitivity cases in individuals allergic to fish. This study aimed to determine the characteristics of the fish major allergenic protein, parvalbumin in different parts of the eel fillet and the effects of boiling technique on the content of this protein. The samples were boiled with 100 mL of water in an Erlenmeyer flask at 95°C for 10 min. The eel fillet was divided into three parts: the front, middle, and rear part of the body. Protein profiles from each part were identified using sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Bradford assays. Parvalbumin was further purified by ammonium sulfate precipitation. The concentration of protein in the different parts of the eel was not significantly different, whereas the processing treatments (meat with water (F1 extract) and meat without water (F2 extract)) affected protein concentration. Eel meat contained proteins with molecular weights ranging from 10 to 186 kDa. Parvalbumins are highly water-soluble, as their content was reduced in the fillet, but were observed at a high concentration in the water after boiling. Parvalbumins of eel were purified by ammonium sulfate 70-90% with high purity. Interestingly, two different bands were observed in SDS-PAGE, suggesting the presence of a protein variant. The molecular weight of parvalbumin obtained from purification ranged from 10 to 11 kDa, similar to that of other fish.
Comparative Study of Pre-Extraction Treatments and Buffer Modifications for Macroalgal Lectin Extraction Fajarningsih, Nurrahmi Dewi; Nursid, Muhammad; Nugroho, Hartanto; Nuringtyas, Tri Rini; Isnansetyo, Alim
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 18, No 3 (2023): December 2023
Publisher : :Agency for Marine and Fisheries Research and Human Resources, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.852

Abstract

Getting an efficient extraction approach is a crucial step in bioactive protein research, particularly lectin. This research aimed to examine the efficiency of cryogenic-grinding (CG) and freeze-dried-grinding (FG) pre-extraction treatments, and also the incorporation of phenylmethylsulphonyl fluoride (PMSF), Tween 80, polyvinylpolypyrrolidone (PVPP), 70% Ethanol (EtOH), or combination of the chemicals in the 20 mM phosphate buffered saline pH 7 (PBS) for extracting lectin from Ulva lactuca, Sargassum polycystum, and Hydropuntia edulis. The lectin content of the extracts was determined using the hemagglutination activity (HA) assay. The phenolic content was measured to determine its impact on the lectins’ HA. Lectin extraction efficiency was determined by analyzing the extracts’ minimum agglutination concentration (MAC) and total hemagglutination activity (THA). CG pre-extraction treatment produced slightly higher THA than FG, making it slightly more efficient. The EtOH treatment efficiently extracted lectin from U. lactuca and H. edulis by substantially reducing the polyphenol (PPs) content, lowering the MAC, and increasing the THA. The EtOH treatment significantly decreased the PPs and HA of the S. polycystum, suggesting that the HA is most likely produced by the PPs rather than the lectin content. Tween 80 raised the THA of U. lactuca by 17-fold with native rabbit erythrocyte compared to the control but did not affect the THA of H. edulis and S. polycystum. Several different effects of chemicals incorporated in the extraction buffers suggested that the optimum macroalgal lectin extraction strategy is species-dependent.
Effect of Ultrasonic-Assisted Enzymolysis on Protein, Phenolic Content, and Antioxidant Activity of Chlorella sp. Crude Extract Budiari, Setyani; Hamidatun, Hamidatun; Filailla, Euis; Artanti, Nina; Devi, Anastasia Fitria; Melanie, Hakiki; Maryati, Yati; Mulyani, Hani; Susilowati, Agustine; Aspiyanto, Aspiyanto
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 18, No 3 (2023): December 2023
Publisher : :Agency for Marine and Fisheries Research and Human Resources, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.788

Abstract

Chlorella sp. microalgae is a potential source of natural antioxidants and other bioactive compounds used in the food and pharmaceutical industries. Ultrasound pretreatments followed by enzymolysis are widely used to improve the functional properties of biological materials. This work aimed to investigate the effects of ultrasound pretreatments followed by bromelain hydrolysis on the proteins, phenolic content, and antioxidant activity of Chlorella sp. crude extract. The experimental design for the study involved two factors: ultrasound pretreatment time (0, 5, and 10 min) and bromelain hydrolysis time (0, 2, 4, and 6 hours). The protein was measured using Lowry assay while the total phenolic content was measured using a Folin–Ciocalteu assay. The highest protein content (7.09 ± 0.44 mg/mL) and phenolic concentrations (0.28 ± 0.01 ìg/mL) were obtained at 5 min ultrasound pretreatment and 6 hours enzymolysis. For antioxidant activity, 5 min ultrasound pretreatment followed by 4 hours of enzymolysis resulted in the highest DPPH (1,1-diphenyl-2-picrylhydrazyl radical) inhibitory activity (81.74%). Meanwhile, ultrasound pretreatment for 10 min followed by 6 hours of enzymolysis resulted in the highest ABTS (2,20 azinobis-(3-ethylbenzthiazoline-6-sulfonic acid) inhibitory activity (94.10%). This study showed that variation in ultrasound pretreatments followed by bromelain hydrolysis could be used to improve the protein content, phenolic content, and antioxidant activity of Chlorella sp. crude extract. 
The Influence of Acid and Cooking Methods on The Quality of Fish Meal Processed from by-products of Catfish Fillet Processing Suryaningrum, Theresia Dwi; Ellya, Ellya; Fateha, Fateha; Setiawati, Natalia Prodiana; Mardiyana, Indri; Supriyanto, Agus; Nurhayati, Nurhayati; Giyatmi, Giyatmi
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 18, No 3 (2023): December 2023
Publisher : :Agency for Marine and Fisheries Research and Human Resources, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.800

Abstract

Catfish fillet processing produces a by-product dominated by heads (25- 28%) and bones (11-13%). This study aims to process fish meal from by- products of catfish using different treatments, namely soaking in a 4% formic acid solution (F) and a 4% hydrochloric acid solution (H), as well as cooking techniques involving boiling (R) and steaming (K). Observations were made on the yield, pH, proximate analysis, calcium content, NPN (non-protein nitrogen), TBA (thiobarbituric acid), microbiological tests, sensory evaluation, and amino acid profiles. The research showed that soaking in acid caused a decrease in pH, protein content, and TBA and increased the fat content of the resulting fish meal. The optimal treatment for the highest quality fish meal is steaming without acid treatment. In this treatment, the protein content meet  the requirements of the SNI 01.2725.01.2013 as grade 3 fish meal, with a yield of 22.83%, a pH of 6.86, a moisture content of 6.2 ± 0.3%, an ash content  of 27.33 ± 0.7%, and a protein content of 45.5 ± 1.3%. Analysis of the amino acid profile of fish meal from that treatment showed a better amino acid composition compared to commercial fish meal. The fish meal  contained essential amino acids in sufficient quantities, with higher levels compared to the amino acid standards set by FAO/WHO 2013 for human nutritional needs, and met the requirements as a nutritional ingredient for fish and livestock feed.

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