In this research, the occurrence of hygienic quality and histamine in commercial brined and dried milkfish products, and the effects of brine concentrations on the quality of brined and dried milkfish, were studied. Brined and dried milkfish products ( = 20) collected from four retail stores in Taiwan were tested to investigate their histamine-related quality. Among them, five tested samples (25%, 5/20) had histamine contents of more than 5 mg/100 g, the United States Food and Drug Administration guidelines for scombroid fish, while two (10%, 2/20) contained 69 and 301 mg/100 g of histamine, exceeding the 50 mg/100 g potential hazard level. In addition, the effects of brine concentrations (0%, 3%, 6%, 9%, and 15%) on the chemical and bacteriological quality of brined and dried milkfish during sun-drying were evaluated. The results showed that the aerobic plate count (APC), coliform, water activity, total volatile basic nitrogen (TVBN), and histamine content values of the brined and dried milkfish samples decreased with increased brine concentrations, whereas those of salt content and thiobarbituric acid (TBA) increased with increasing brine concentrations. The milkfish samples prepared with 6% NaCl brine had better quality with respect to lower APC, TVBN, TBA, and histamine levels.
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http://dx.doi.org/10.3390/foods9111597 | DOI Listing |
Environ Sci Pollut Res Int
January 2025
Council for Geoscience, Private Bag X112, Pretoria, 0001, South Africa.
One-step high-pressure and high-temperature direct aqueous mineral carbonation of tailings derived from mining of Platinum Group Metals in South Africa requires a fundamental understanding of the reactivity of the most dominant mineral phases, i.e. pyroxene and plagioclase (66 wt.
View Article and Find Full Text PDFHeliyon
December 2024
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Dhaka, 1000, Bangladesh.
Biochem Biophys Rep
December 2024
Durgapur Degree College, Rajshahi 6240, Bangladesh.
This research aims to isolate, characterize, and analyze pure compounds from leaf extract to investigate its antibacterial, antidiabetic, cytotoxic, and phytotoxic effects. Fresh leaves were collected, dried, and subjected to methanol extraction to obtain a crude extract. From the petroleum ether fraction (PEF) of this extract, three fractions-designated LM1, LM2, and LM3-were prepared using column chromatography.
View Article and Find Full Text PDFSmall
October 2024
School of Chemical Engineering, Fuzhou University, Fuzhou, 350108, China.
The use of hydrogel-based interfacial solar evaporators for desalination is a green, sustainable, and extremely concerned freshwater acquisition strategy. However, developing evaporators that are easy to manufacture, cheap, and have excellent porous structures still remains a considerable challenge. This work proposes a novel strategy for preparing a self-assembling sponge-like poly(vinyl alcohol)/graphite composite hydrogel based on the Hofmeister effect for the first time.
View Article and Find Full Text PDFCurr Drug Discov Technol
August 2024
Department of Chemistry, S. S. Khanna Girls' Degree College, Prayagraj, Uttar Pradesh, India.
Background: Cyclodextrins selectively bind with reactants and facilitate chemical reactions through supramolecular catalysis, similar to the mechanisms employed by enzymes. In this paper, β-cyclodextrin was used as a supramolecular catalyst in water as a green, reusable, and ecofriendly solvent system to synthesize spiro-benzimidazoquinazolinones and spiro-benzothiazoloquinazolinones.
Objective: A supramolecular catalyst β-cyclodextrin (β-CD) is used to synthesize spiro- benzimidazoquinazolinones and spiro-benzothiazoloquinazolinones multicomponent reaction involving the condensation of dimedone, isatin, and 2-aminobenzimidazole/2-aminobenzothiazole.
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