Determination of quality and aqua veterinary drugs residues of some cultured fish and their processed products

Abstract Utilization of cocoa bean to be a derivative products in industrial is wide enough, that it is necessary to determine the priority of the processed products development. This study aimed to determine the prospective processed cocoa products with a system approach using Bayes method and assessed the potential of added value by using Hayami method. Based on several assessment criteria indicated that chocolate bar is the priority product that needs to be developed and followed by several other processed products. This development was able to produce the added value of Rp 135.000 per kg of cocoa beans. Result indicated that by processing the cocoa beans into chocolate bar could provide a considerable income for the businessman.

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Matrix effect and retention efficiency of hydrophilic-lipophilic balance cartridges in multi-residual determination of veterinary drugs in river water

Chinese Journal of Chromatography ◽

10.3724/sp.j.1123.2013.04043 ◽

2013 ◽

Vol 31 (10) ◽

pp. 980

Author(s):

Shanshan LIN ◽

Qitong YI ◽

Jiajun HONG ◽

Meng CHEN ◽

Dongxing YUAN

Keyword(s):

River Water ◽

Matrix Effect ◽

Veterinary Drugs ◽

Retention Efficiency ◽

Hydrophilic Lipophilic Balance

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Determination of veterinary drugs in microalgae biomass from photobioreactors fed with piggery wastewater

Chemosphere ◽

10.1016/j.chemosphere.2021.132076 ◽

2021 ◽

pp. 132076

Author(s):

Rebeca López-Serna ◽

Silvia Bolado ◽

Rubén Irusta ◽

Juan J. Jiménez

Keyword(s):

Veterinary Drugs ◽

Piggery Wastewater ◽

Microalgae Biomass

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Heavy Metals Content in Phaeophyceae from Malang Rapat Waters, Bintan

ILMU KELAUTAN Indonesian Journal of Marine Sciences ◽

10.14710/ik.ijms.26.1.57-62 ◽

2021 ◽

Vol 26 (1) ◽

pp. 57-62

Author(s):

Hilda Novianty ◽

Emienour Muzalina Mustafa ◽

Suratno Suratno

Keyword(s):

Heavy Metals ◽

Metal Contamination ◽

Heavy Metal Contamination ◽

Dry Weight ◽

Raw Material ◽

National Agency ◽

Brown Macroalgae ◽

Turbinaria Conoides ◽

Processed Products

The use of brown-macroalgae (Phaeophyceae) as an alginate source is very broad, covering the food and non-food industry, because of that it is necessary to know the safety of these natural resources, one of which is safe from heavy metal contamination. The purpose of this study was to determine heavy metals concentrations accumulated in several types of Phaeophyceae (brown macroalgae) as an alginate source from Malang Rapat waters, Bintan. The method used was descriptive non-experimental. The determination of the location of sampling was done by purposive sampling method. Samples were taken through free collection, identified species and measured of metal contamination concentrations for As, Cd, and Pb. The data obtained were analyzed descriptively. The results showed that Phaeophyceae found in Malang Rapat waters were Turbinaria conoides, Sargassum aquifolium, Padina australis, Hormophysa cuneiformis with each metal concentration contamination of As 13.95 to 23.30 µg.g-1 dry weight; Cd from 0.33 to 1.08 µg.g-1 dry weight and Pb from 4.72 to 9.92 µg.g-1 dry weight. This study showed that all metal contamination ranges in all Phaeophyceae were on the verge of the maximum limit set by the National Standardization Agency of Indonesia Indonesian (SNI) No 7387 of 2009 and National Agency of Drug and Food Control of RI (BPOM) Regulation No 5 of 2018 for dried macroalgae product so that Phaeophyceae from Malang Rapat waters - Bintan was not safe to be used as raw material for alginate source or other processed products of brown-macroalgae.

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Sorption of As (III) and Se (IV) from aqueous solutions for subsequent determination by total reflection X-ray fluorescence

Industrial laboratory Diagnostics of materials ◽

10.26896/1028-6861-2021-87-8-19-22 ◽

2021 ◽

Vol 87 (8) ◽

pp. 19-22

Author(s):

D. G. Filatova ◽

A. A. Arkhipenko ◽

M. A. Statkus ◽

I. V. Mikheev ◽

V. B. Baranovskaya ◽

...

Keyword(s):

Raw Materials ◽

Total Reflection ◽

Phase Contact Time ◽

Sorbent Phase ◽

X Ray ◽

Icp Ms ◽

Subsequent Determination ◽

Processed Products ◽

Branched Structure

An approach to the simultaneous isolation of As (III) and Se (IV) from solutions on a new S,N-containing sorbent followed by determination of the analyte in the sorbent phase using total reflection X-ray fluorescence (TXRF) has been proposed. To match the goal, a sorbent with a branched structure was synthesized on the base of polyacrylamide modified with formaldehyde and hydrogen sulfide. This is a heteroatomic copolymer containing sulfide bridges in the chain and crosslinking by a tertiary amine. Conditions for the quantitative co-extraction of As (III) and Se (IV), i.e., sorption in solutions of 1 M HNO3 with calcium ions present, heating to 60°C and phase contact time of 1 h were determined. The mechanism of sorption interaction of the analytes under specified conditions is discussed. It is shown that a 100-fold excess of iron, zinc and copper does not interfere with the extraction of analytes, thus providing the possibility of As (III) and Se (IV) isolation from different types of raw materials and processed products using the synthesized sorbent. A method for the direct XRF quantification of arsenic and selenium with sr 0.09 and 0.08, respectively, in the sorbent phase has been developed. The correctness of the results was confirmed by the ICP-MS method in analysis of aqueous reference solution after dissolution of the sorbate in HNO3 (1:1).

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