Canned Food Products Research Articles

CANNING PRODUCTION OF “ZHELRYBAˮ IN 1923–1929

The article is devoted to a little-studied topic – the canning production of “Zhelrybaˮ (abbreviation of the Russian words “ZHELeznaya dorogaˮ, railway, and “rybaˮ, fish). The source base is the materials of the periodical press of 1923-1929 and unpublished materials of the central and local (Murmansk) archives. The article attempts to identify the economic and technical features associated with the production of canned food of “Zhelrybaˮ enterprise. Based on extensive archival material, the specifics of canned food production at the enterprise associated with the colonisation of Kola Peninsula, the range of products produced, as well as economic indicators of the effectiveness of the canning production of the enterprise, are studied. Data on possible options for a different geographical location of the enterprise’s production facilities are provided, with an economic justification of the pros and cons of certain localities. The author concludes that “Zhelrybaˮ was able to start industrial production of high-quality canned food from scratch and at the same time contribute to the economic development of those areas where its production was located.

Quantitation of α-Dicarbonyls, Lysine- and Arginine-Derived Advanced Glycation End Products, in Commercial Canned Meat and Seafood Products.

Commercial sterilization is a thermal processing method commonly used in low-acid canned food products. Meanwhile, heat treatment can significantly promote advanced glycation end product (AGE) formation in foodstuffs. In this research, the validated analytical methods have been developed to quantitate both lysine- and arginine-derived AGEs and their precursors, α-dicarbonyls, in various types of commercial canned meat and seafood products. Methylglyoxal-hydroimidazolone 1 was the most abundant AGEs found in the canned food products, followed by Nε-(carboxyethyl)lysine, Nε-(carboxymethyl)lysine, and glyoxal-hydroimidazolone 1. Correlation analysis revealed that methylglyoxal and glyoxal were only positively associated with the corresponding arginine-derived AGEs, while their correlations with the corresponding lysine-derived AGEs were not significant. Importantly, we demonstrated for the first time that total sugar and carbohydrate contents might serve as the potential markers for the prediction of total AGEs in canned meats and seafoods. Altogether, this study provided a more complete view of AGEs' occurrence in commercial canned food products.

Radioactivity content surveillance on canned food products in Nigeria

The radionuclides surveillance on imported can food products in Nigeria market has been investigated using High purity Germanium detector. The radioactivity concentrations of 226Ra, 232Th, 40K, 210Pb and 137Cs in selected brands of imported canned food products categorized into staple foodstuffs, beef and seafood were analyzed. The results obtained for staple foodstuffs shows a mean activity value of 12.33±3.68, 12.35±4.62, 51.48±15.12, 2.65±0.18 and 0.61±0.27 Bq kg-1 for 226Ra, 232Th, 40K, 210Pb and 137Cs respectively, while in beef food products, it is 14.41±4.79, 14.12±4.83, 50.44±14.80, 1.11± 0.07 and 0.32±0.20 Bq kg-1 respectively, and for seafood products it is 17.95±5.71, 16.24±5.48, 61.65±18.07, 1.17±0.13 and ND Bq kg-1 respectively. The overall results indicate that the natural radioactivity in the three categories of canned foodstuffs examined are well below the UNSCEAR and other regulatory bodies recommended permissible limits. The presence of 137Cs in some samples potent some degree of heavy metal contamination of those foodstuffs. The computed dose to essential organs and tissues indicates a highest dose level of 0.2 mSvy-1 which is well within the 1mSvy-1 recommended permissible level of the public. The calculated collective effective dose equivalent revealed that 97,463,16 of the total population are exposed to radiation from ingestion of the canned foods with adults most impacted. The total health detriment indicates radiological risk ratio of 1:2238 for infants, 1:2583 for children and 1:4238 for adults. From the estimated costdetriment, it is obvious that the economic benefits which is directly proportional to cost of purchase and importation put at about nine billion US dollars annually derived from consuming these imported canned food products is far above the health detriment.
 Keywords: Radioactivity surveillance, canned food, health detriment, Nigeria

REFINEMENT OF STERILIZATION REGIMES OF HETEROGENEOUS VEGETABLE PRODUCTS IN DEPENDENCE FROM VALUE pH

The article deals with the optimization of the process of developing sterilization regimes for vegetable heterogeneous products for the production of benign canned food. When developing sterilization regimes for vegetable products, the value of the thermal stability of Clostridium botulinum spores is taken into account. The calculation of the thermal stability of microorganisms (DT) was carried out taking into account the pH of the product. During the heating of heterogeneous canned food, the components had a different pH value. It has been experimentally established that in order to obtain preliminary data on the determination of DT in heterogeneous vegetable products, it is advisable to use the capillary method, and to obtain more accurate parameters for the thermal stability of the test-microbial spores, it is necessary to use metal test containers of a special design. This will allow more accurate calculation of the parameters of sterilization regimes, which is especially important in the production of canned food for baby food.

Genotypic and phenotypic characterization of foodborne Geobacillus stearothermophilus

Geobacillus stearothermophilus is the main thermophilic spore former involved in flat sour spoilage of canned foods. Three typing methods were tested and applied to differentiate strains at intra-species level: panC sequence analysis, REP-PCR and M13-PCR. panC gene was highly conserved within the studied strains, suggesting a low intra-specific diversity. This was supported by REP-PCR primary assays and M13-PCR results. M13-PCR profile analysis succeeded in differentiating six closely related groups (at 79% threshold similarity) among 127 strains from a range of spoiled canned food products and from different canneries. Phenotypic traits were investigated among 20 selected strains representing groups and origins. Ranges of growth under different temperatures (from 40 °C to 70 °C), pH (from 5.0 to 6.5), NaCl concentrations (from 1 to 5%) and sporulation conditions poorly differed between strains, but wet heat resistance of spores showed a 20-fold variation between strains. Furthermore, in this study, strains that belonged to the same M13-PCR genetic group did not share phenotypic characteristics or common origin. The work emphasizes a low diversity within the G. stearothermophilus species but data from this study may contribute to a better control of G. stearothermophilus spoilage in canned food.

Gas Chromatography-mass Spectrophotometry Evaluation of the Concentration of Bisphenol-A (BPA) in Five Selected Canned Food Products Consumed in Lagos Area, Nigeria

Aims: This research was designed to evaluate the Bisphenol A (BPA) level in five selected canned food products (sweet corn, baked bean, green pea, tomato paste and sardine) on sale in Lagos markets, South West Nigeria. Place and Duration of Study: Department of Biochemistry and Department of Chemistry, Faculty of Basic Medical Sciences, College of Medicine and Faculty of Science, University of Lagos, Nigeria between May 2012 and November 2012. Methodology: The canned food products purchased from Oyingbo and Mushin markets in Lagos, Nigeria and stored at room temperature prior to analysis were carefully opened and oven dried at 60oC for one week. They were then subjected to solid phase extraction with acetonitrile and derivatization with acetic anhydride. Gas chromatography and massspectrometry was carried out on the derivatized samples and compared with BPA standard. Results: BPA in varied concentrations was detected in samples of all the canned products at levels ranging from 0.3 to 4.1μg/L, except for sardine in which BPA was not Research Article British Journal of Applied Science & Technology, 4(1): 187-197, 2014 188 detected. Conclusion: Consumers’ exposure to BPA through consumption of these canned food products in Lagos area, Nigeria is low, well below the provisional tolerable daily intake of 25 μg/kg of body weight/day established by Health Canada and 50 μg/kg of body weight/day by the U.S. Environmental Protection Agency and the European Food Safety Authority. Consumption of these canned foods therefore is safe without fear of any adverse effect.

Assessment of the Safety of Some On-The-Shelf Canned Food Products Using PCR-Based Molecular Technique

Study on the assessment of bacteria load of some on-the-shelf canned food products bought from different shops in the open markets in Owerri, Imo State, Nigeria was undertaken. Eleven canned food products including 2 cans of tomato paste (TP), 2 of fish-in-tomato-sauce (FTS), 3 of sweet corn (SC), baked beans (BB), 1 of green peas (GP) and 2 kidney beans (KB) were collected randomly and used for the analysis. Culture-based identification depicts the presence of Bacillus sp., Staphylococcus sp., Vibrio parahaemolyticus, Salmonella sp., Klebsiella sp., Proteus sp., Pseudomonas sp. and Escherichia coli. Plasmid profiling of culture-dependent isolates showed visible bands except Staphylococcus sp., Klebsiella sp. and Bacillus sp. Randomly amplified polymorphism DNA [RAPD] profiling using varying oligonucleotide primers specific for identification of 16SrRNA genes of some organisms of public health concern, confirmed the presence of coliforms, Staphylococcus sp., Vibrio sp., S. typhi and S. enteritidis on gel electrophoresis field. In the context of possible risk of consuming contaminated canned food products, this study was designed to show that most on-the-shelf canned food products can possibly habour organisms of public health importance which can be ascertained through molecular characterization using PCR-based technique. There is also the possibility of these organisms posing food safety issues and pharmaceutical risks in case of possible out break, assayed through plasmid profiling of the culture-dependent isolates. A major concern in this study is the lack of adherence to food safety regulations. The products still been marketed on the shelves and analyzed in this study must have outlived the shelf stability period.