scholarly journals Determination of Aflatoxins in Wheat and Wheat by-products Intended for Human Consumption, Marketed in Rio de Janeiro, Brazil

2014 ◽  
Vol 2 (10) ◽  
pp. 671-674 ◽  
Author(s):  
Felipe Machado Trombete ◽  
Douglas de Ávila Moraes ◽  
Yuri Duarte Porto ◽  
Thaís Barbosa Santos ◽  
Glória Maria Direito ◽  
...  
Keyword(s):  
Rio De Janeiro ◽  
Human Consumption ◽  
By Products

scholarly journals Chlorine dioxine DBPs (disinfection by-products) in drinking water

2013 ◽  
Vol 86 (1) ◽  
Author(s):  
C. Lasagna ◽  
E. Raffo ◽  
M. Bianchi ◽  
L. Pocaterra
Keyword(s):  
Drinking Water ◽  
Ion Chromatography ◽  
Chlorine Dioxide ◽  
Human Consumption ◽  
Analytical Technique ◽  
Experimental Part ◽  
Italian Regions ◽  
By Products ◽  
Different Origin

Since the 1970s it has been well known that, though water for human consumption is generally disinfected before being distributed along the network, the use of chemicals results in the formation of many different Disinfection By-Products (DBPs). In the case of chlorine dioxide, the most important and represented DBPs are chlorite and chlorate: after an introduction concerning the current Italian regulation on this subject, in the experimental part the results of a 7-year minitoring campaign, concerning water of different origin collected from taps in various Italian regions, are shown. The analytical technique used for the determination of chlorite and chlorate was Ion Chromatography. The result obtained are finally discussed.

scholarly journals Study of the biodegradation of slaughterhause feather waste by Bradford method

2014 ◽  
pp. 77-81
Author(s):  
Lili Mézes ◽  
Szabolcs Molnár
Keyword(s):  
Amino Acids ◽  
Moisture Content ◽  
Enzymatic Degradation ◽  
Human Consumption ◽  
Feather Waste ◽  
Physical Chemical ◽  
Pre Treatment ◽  
Poultry Feather ◽  
By Products

The 15–20% of the by-products of meat- and poultry industry – that unsuitable for human consumption – contains keratin. The slaughter technology of poultry produces large amount of poultry feather with 50–70% moisture content. This means more million tons annually worldwide (Williams et al., 1991; Hegedűs et al., 1998). The keratin content of feather can be difficulty digested, so physical, chemical and/or biological pre-treatment is needed in practice, which has to be set according to the utilization method. The microbiological and enzymatic degradation of feather to soluble protein and amino acids is a very favourable and relatively cheap opportunity to produce valuable products of the resulting feather. Our applied treatments were based on the determination of the most effective method, which is able to follow the biodegradation of waste poultry feather.

scholarly journals Categorization of animal by-products and labelling of derived products with of glycerol triheptanoate (GTH)

2019 ◽  
Vol 75 (05) ◽  
pp. 6250-2019
Author(s):  
ALEKSANDRA GRELIK ◽  
EWELINA KOWALCZYK ◽  
KRZYSZTOF KWIATEK
Keyword(s):  
Animal Health ◽  
Control Measures ◽  
Animal Origin ◽  
Human Consumption ◽  
Mass Spectrometry Detection ◽  
Processing Plants ◽  
Commission Regulation ◽  
Rendered Fat ◽  
By Products

Animal by-products result mainly from the slaughter of animals for human consumption, the production of products of animal origin (such as dairy products), the disposal of dead animals, and disease-control measures. Regardless of their source, they pose a potential risk to public and animal health and the environment. This risk needs to be adequately controlled, either by safe disposal of such products, or by their utilization, provided that strict conditions are maintained to minimize the health risks involved. Animal by-products are classified into categories that reflect the level of risk to public and animal health arising from those by-products (Cat. 1, 2 and 3). According to Commission Regulation (EU) No 142/2011, in processing plants for the processing of Category 1 or 2 material, derived products shall be permanently marked with glycerol triheptanoate (GTH). The minimum content of marker in target materials is 250 mg/kg of fat. For the determination of glycerol triheptanoate in dry meat, bone meals, rendered fat and soil adjuvants, gas chromatography technique and mass spectrometry detection are used

scholarly journals Bacterial Diversity Analysis and Evaluation Proteins Hydrolysis During the Acid Whey and Fish Waste Fermentation

2021 ◽  
Vol 9 (1) ◽  
pp. 100
Author(s):  
Alba C. Mayta-Apaza ◽  
Israel García-Cano ◽  
Konrad Dabrowski ◽  
Rafael Jiménez-Flores
Keyword(s):  
Microbial Diversity ◽  
Microbial Ecology ◽  
Illumina Miseq ◽  
Human Consumption ◽  
Fish Waste ◽  
Alpha And Beta Diversity ◽  
Analysis And Evaluation ◽  
Dynamic Variations ◽  
Acid Whey ◽  
By Products

The disposal of acid whey (Aw), a by-product from fermented products, is a problem for the dairy industry. The fishery industry faces a similar dilemma, disposing of nearly 50% of fish processed for human consumption. Economically feasible and science-based alternatives are needed to overcome this problem. One possible solution is to add value to the remaining nutrients from these by-products. This study focuses on the breakdown of nutrients in controlled fermentations of Aw, fish waste (F), molasses (M), and a lactic acid bacteria (LAB) strain (Lr). The aim was to assess the dynamic variations in microbial diversity and the biochemical changes that occur during fermentation. Four treatments were compared (AwF, AwFM, AwFLr, and AwFMLr), and the fermentation lasted 14 days at 22.5 °C. Samples were taken every other day. Colorimetric tests for peptide concentrations, pH, and microbial ecology by 16S-v4 rRNA amplicon using Illumina MiSeq were conducted. The results of the microbial ecology showed elevated levels of alpha and beta diversity in the samples at day zero. By day 2 of fermentation, pH dropped, and the availability of a different set of nutrients was reflected in the microbial diversity. The fermentation started to stabilize and was driven by the Firmicutes phylum, which dominated the microbial community by day 14. Moreover, there was a significant increase (3.6 times) in peptides when comparing day 0 with day 14, making this treatment practical and feasible for protein hydrolysis. This study valorizes two nutrient-dense by-products and provides an alternative to the current handling of these materials.

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