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Proceeding of the 4 rd International Symposium“NEW RESEARCH IN BIOTECHNOLOGY” USAMV Bucharest, Romania, 2011the organoleptic, physico-chemical and microbiological point of view during the entirestorage period.Table 1. The lacquer systems and products analyzedCans dimensions Ø 99x48 welded cans (3 pieces) Ø 73x30 pressed cans (2 pieces)(mm)ProductLacquer systemPork meat in natural juice Fois grasInner side:WHITE PL lacquerInner and outer side :WHITE PL lacquerInner side: HE GOLD lacquerOuter side:PL GOLD lacquerOuter side:PL GOLD lacquerInner side: HE GOLD lacquerOuter side:PL GOLD lacquerThe characteristics of the lacquer layer:The analysis of the inner lacquer layer of a representative group of opened cans wasdone piece by piece and compared with the products standard conditions. The layer’sporosity was determined with the porosymeter for both the empty and the filled andemptied (after a while) cans and the after a certain time of storage. The initial lacquer layercharacteristics and the porosity during the storage time are presented in table no. 3 and 4.The organoleptic, physico-chemical and microbiological analysis of the two types offood products (pork meat and fois gras) canned in the metallic cans was periodically ledafter 12 months of storage.3. RESULTS AND DISCUSSIONSThe results of the lab analysis of the used protection lacquers are presented in table2.From the analysis of the results presented in table 2 we can conclude the followings:- there were neither organoleptic modifications regarding the appearance and smellof the tubes nor of the extraction liquids;- the values obtained for the components global migration in all extractionenvironments were below the admitted value of 60 ppm;The results of the global migration tests and of the organoleptic examination were inaccordance with HG nr. 1197/2002, that contains specific directives such as 72/2002/CEand amendments .- the heavy metals releases were below the admitted values : the Pb was below 0,02ppm, and the Cd was below the detection limit of the device 0,12 ppb (the values were inaccordance with the limits imposed in the Order no. 975/1998- repealed in the presenttime).- the specific migration of bisphenol A (BPA) by the 2 methods UV-VISspectrometry and gas chromatography coupled with mass spectroscopy GC- MS indicatedasit was expected- substantial differences between the obtained values of the sameanalyzed water extract.168
Proceeding of the 4 rd International Symposium“NEW RESEARCH IN BIOTECHNOLOGY” USAMV Bucharest, Romania, 2011Table 2. The lab analysis of the cans protection lacquersLacquerSimulantExtractionconditions/ExtractionratioA: distilledwater1h, 121 o C/1:1GOLD B: 3 % acetic 1h, 121 o C/HE acid solution 1:1D: isooctane24h, 40 o C/1:1A: distilled 1h, 121 o C/water 1:1ALB PL B: 3 % acetic 1h, 121 o C/acid solution 1:1D: isooctane24h, 40 o C/1:1A: distilled 1h, 121 o C/water 1:1GOLD B: 3 % acetic 1h, 121 o C/PL acid solution 1:1D: iso-octane 24h, 40o C/1:1OrganolepticmodificationsSample/ExtractUnmodified /UnmodifiedUnmodified /UnmodifiedUnmodified /UnmodifiedUnmodified /UnmodifiedUnmodified /UnmodifiedUnmodified /UnmodifiedUnmodified /UnmodifiedUnmodified /UnmodifiedUnmodified /UnmodifiedGlobalmigration,ppmMetals release,ppmPhenolic derivates,(Bisphenol A),ppmPb Cd UV-VIS GC-MS7,75 - - 1,6 BPA: 0,609,75 0,012
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