Survey of bisphenol A and bisphenol F in canned foods

http://www.mindfully.org/Plastic/Plasticizers/BPA-BPF-Canned-FoodsAug02.htm 

Food Additives and Contaminants v.19, n.8, 1aug02

A. Goodson, W. Summerfield and I. Cooper*
Pira International, Randalls Road, Leatherhead, KT22 7RU, UK
* To whom correspondence should be addressed. e-mail: IanC@pira.co.uk
(Received 16 November 2001; revised 6 March 2002; accepted 25 March 2002)
Bisphenol A (BPA) and bisphenol F (BPF) have been determined in a range of canned foods. Sixty-two different canned foods were purchased from retail outlets in the UK from January to November 2000 and the contents extracted and analysed by GC-MS for BPA and BPF isomers. The following canned products were analysed: fish in aqueous media, 10 samples; vegetables, 10; beverages, 11; soup, 10; desserts, five; fruit, two; infant formula, four; pasta, five; and meat products, five. BPF isomers were not detected in any of the canned foods with detection limits of 0.005 mg kg -1 for the 2,2 0 and 2,4 0 isomers and 0.01mg kg -1 for the 4,4′ isomer. BPA was detected in 38 samples with a detection limit of 0.002mg kg -1. Of these, BPA was quantified in 37 canned foods at levels from 0.007 mg kg -1, with one sample of meat containing a mean level of 0.38 mg kg -1. All other samples contained <0.07 mg kg -1 BPA.
Keywords : bisphenol A, bisphenol F, canned foods, survey, migration, can coatings

Introduction

Food and beverage cans often have an internal polymeric coating to protect the food and prevent undesirable interactions between the metal from the can and the food. The polymeric coatings are usually highly cross-linked thermoset resins that can withstand typical processing conditions (1.5 h at 121°C). The most widely used lacquer types for food cans, where the food is retorted (sterilized) in the can to ensure preservation, are the following.

  • Epoxyphenolic. 
  • PVC organosol. 
  • Polyester phenolic.

Of these coatings, the epoxyphenolic is most important, being used universally for both can bodies and ends for two- and three-piece constructions, although more usually for shallow draw cans in the case of two-piece. Beverage can bodies are commonly epoxyamine coated.

Bisphenol A (2,2′-bis(4-hydroxyphenyl) propane (BPA) is a starting substance used in the manufacture of most types of epoxy resins, which are then cross-linked and used to coat food cans. BPA is not normally present in PVC organosol coatings. However, if bisphenol A diglycidyl ether (BADGE) was used as an additive to scavenge hydrogen chloride in these coatings, residues of BPA, as unreacted starting material in the BADGE, may be present.

Another use of BPA is in the manufacture of plastic materials, in particular polycarbonates used in contact with foods. Directive 90/128/EEC lists BPA in the positive list with a specific migration limit of 3mg kg -1 (European Commission 1990).

Previous research has shown that migration of BPA can occur from can coatings to food simulants (Cooper et al. 1996). It was also shown that migration to the fatty food simulant olive oil was generally much lower compared with aqueous simulants, such as 10% ethanol.

BPA has been the subject of many studies exploring its potential endocrine disrupting properties, e.g. Vom Saal et al. (1998). These studies have largely given conflicting results.

BPF, a mixture of 3 isomers (2,2′-, 2,4′-, and 4,4′-dihydroxydiphenylmethane used commercially as a mixture in the ratio 15, 50 and 35%, respectively) can also be used in the manufacture of epoxy resins, but as a fully cross-linked polymer it is rarely used in food-contact materials. Residues of BPF isomers (Novolac) may arise from their use in the manufacture of Novolac glycyidyl ethers (NOGE), which are used as scavengers for hydrogen chloride in PVC organosol coatings.

Materials and methods

Samples

Three cans of each sample, all bearing the same batch number, were purchased from retail outlets in the south of England. The distribution of types of samples tested in this survey was similar across the UK. Collection of samples was weighted approximately 80% from supermarkets and included about 40% ‘own brand’ foods to reflect approximately consumer shopping habits.

Samples were stored sealed at room temperature. After cans were opened, the total contents of each can were homogenized and an aliquot taken for analysis. The remaining contents of each can were then frozen and stored in a freezer.

Calibration materials

BPA (>99%), and BPF isomers 2,2 0-dihydroxydiphenylmethane (95%) and 4,4 0-dihydroxydiphenylmethane (98%) were obtained from Sigma-Aldrich, Gillingham, Dorset, UK. 2,40-Dihydroxydiphenylmethane (97%) was obtained from Fluorochem Ltd, Old Glossop, Derbyshire, UK. BPA-d16 (98 atom% D) was obtained from Sigma-Aldrich and converted to BPA-d14 by dissolution in aqueous sodium hydroxide and reprecipitation by acidifying with dilute sulphuric acid. This was carried out to avoid the possibility of differing degrees of exchange of the deuterium atoms on the oxygens with hydrogen during the analysis . This BPA-d14 was used as an internal standard.

Analytical methodology

Published methods for determining BPA in milk or food simulants were not considered to have sufficient detection capability or robustness for the determination of BPA in a wide range of foods (Biles et al. 1997, Franz and Rijk 1997, Mountfort et al. 1997, Howe and Borodinski 1998, Kawamura et al. 1999). A more recent publication described the application of HPLC to the analysis of canned fruit and vegetables purchased from the Japanese market (Yoshida et al. 2001). No methodology was found in the literature for the determination of BPF in foods. Considering the possibility of other migrants from can coatings that exhibit UV fluorescence, e.g. hydrolysis and/or other reaction products of BADGE, BFDGE or NOGE (Biederman and Grob 1998, Lintschinger and Rauter 2000), there could be a significant potential for interferences with BPA and BPF using HPLC- fluorescence detection and, therefore, false-positives. Therefore, a method was developed to measure these analytes simultaneously using gas chromatography-mass spectroscopy (GC/MS), with deuterated BPA as an internal standard, in which BPA and the BPF isomers were acylated using acetic anhydride after isolation from the food. Derivatization of BPA and BPF was found to improve the peak shapes and the robustness of the method.

The entire contents of a can were well mixed using a MSE homogenizer. Twenty grams (g) of subsample were taken and an aliquot of internal standard added. Each subsample was extracted in a beaker with a mixture of 20ml n-heptane (for fat removal) and 20ml acetonitrile using an Ultra-Turrax T25 for 1min. The mixture was left to stand for 15min and was filtered using a GF/C filter and a Buchner flask. The heptane layer was removed using a pipette and this, together with the filter cake, was returned to the beaker for a second extraction with a fresh 20-ml portion of acetonitrile using the Ultra-Turrax. The second extract was filtered as before and the heptane layer removed and discarded. The two acetonitrile filtrates were combined and treated with 30 g anhydrous sodium sulphate for 1min and the solvent decanted into a 50-ml measuring cylinder. For the canned samples with a low fat content, e.g. vegetables, soup, desserts and pasta, heptane was omitted from the procedure above. The extract was then evaporated under nitrogen to approximately 5ml, diluted to 50ml with water and transferred to a 250-ml separating funnel for the derivatization step. Ten millilitres of 72% w/v potassium carbonate and 10ml methanol were added and swirled to mix. Of acetic anhydride, 10ml was added and swirled gently after reaction had subsided. The solution was left to stand for 15min with occasional swirling and then extracted with 5ml n-heptane. The heptane layer was collected and analysed by GC-MS. For the analysis of infant formulae, 10 g formula were extracted with 20ml acetonitrile by shaking vigorously in a 40-ml vial for 1 min. The layers were allowed to settle. The acetonitrile portion was then filtered through a Whatman GF/C filter. The residue was shaken with a further 10ml acetonitrile and filtered. The combined solutions were evaporated under nitrogen and derivatized as described above. For the analysis of beverages, the samples were opened and allowed to degas. A total of 50ml was measured into a 250-ml separating funnel and derivatized as described above.

Quantitative results were obtained using the GC-MS results by comparison against external standards. Stock solutions of BPA and BPF isomers at a concentration of about 1000mg l-1 were prepared separately in acetonitrile. These solutions were diluted to a concentration of 10mg l-1 with acetonitrile and further diluted to 50ml with water with addition of internal standard (0.1 ml 20mg l-1 BPA-d14 in acetonitrile). These standards were derivatized as described above. For each analytical run, a further portion of a food sample was `spiked’ with a known quantity (about 0.1 mg kg -1) of BPA and BPF isomers and then processed in exactly the same fashion as described above. The results for this sample were used to estimate the method recovery for the respective batch and check that the method was `in control’. A solvent blank was also prepared and run alongside the samples.

In all cases, calibration curves were constructed by plotting µg BPA or BPF isomer against the respective peak area ratio to BPA-d14. Quantities were obtained from the graphs by interpolation and the concentrations in the food (mg kg -1) were calculated by dividing by the mass of food taken.

GC/MS conditions

The following GC/MS conditions were used: column, HP-5MS, 30m X 0.25 mm, 0.25 microns film; carrier gas, helium at 5 psi; injector, splitless 270°C; oven programme, 90°C hold for 2 min; ramp to 250°C at 5°Cmin-1; ramp to 300°C at 10°Cmin-1; hold 2min; ions, BPA diacetyl m/z 228, 213; BPF diacetyl isomers m/z 200; BPA-d14 diacetyl m/z 224; retention times, BPA diacetyl 32.5min; 2,2 0-BPF diacetyl, 26.6min; 2,4 0-BPF diacetyl, 28.8min; 4,4 0- BPF diacetyl, 30.9min; and BPA-d14diacetyl, 32.4 min.

Analytical performance

Limits of detection for BPF isomers and BPA were defined by calculating concentrations equivalent to three times the signal:noise on analysis. The detection limits were 0.002mg kg -1 for BPA, 0.005 mg kg -1 for the 2,2 0 and 2,4 0 isomers of BPF, and 0.01mg kg -1 for the 4,4 0 isomer of BPF. Limits of quantification were calculated from the concentration of BPA or BPF giving a signal equal to 10 times the signal:noise on analysis.

The results were corrected for recovery using values obtained for control samples. The calibration graphs had correlation coefficients of 0.995 or better. The mean relative recoveries obtained for BPA were in the range 81-103%. For BPF isomers, the mean relative recoveries obtained (all three isomers combined) were in the range 61-128%. The wider spread of recoveries for BPF isomers is probably caused by the internal standard BPA-d14 not compensating so well for extraction efficiencies in the procedure compared with BPA. In all cases where BPA was quantified (50:007mg kg -1), the peak identity was confirmed by checking also for the m/z ion at 213.


Table 1.

						BPF isomers
Matrix spiked 				BPA 	(combined value)
Tuna Added (mg kg -1) 			0.08	0.133 
Reported (mg kg -1) 			0.09 	0.120 
Found/added (%) 			113 	90 
Baked beans 	Added (mg kg -1)		0.11 	0.2 
		Reported (mg kg -1) 	0.1 	0.24 
		Found/added (%) 	91 	120

Table 2.

Replicate 			BPA (mg kg -1) 
1 				0.011 
2 				0.011 
3 				0.010 
4 				0.010 
5 				0.011 
6 				0.010 
Mean 				0.011 
Sr repeatability SD (mg kg -1)	0.0005 
Repeatability (mg kg -1)		0.0016

The following procedures were used.

  • A solvent blank was processed and analysed alongside the samples for each analytical run. In all cases, no peaks were detected with similar retention times to the analytes.

  • After homogenization of the entire contents of the can, duplicate subsamples were taken from about half of the samples for analysis and single subsamples for the remainder.

  • Good agreement was obtained between replicates.

  • Calibration standards were run covering the concentration range 0.005-0.7mg kg -1.

Duplicate controls consisting of a subsample fortified with about 0.1mg kg -1 BPA and BPF isomers were run with each batch of samples and recoveries calculated. Mean recoveries were within an acceptable range.

To ensure that results obtained were of acceptable accuracy, samples of baked beans and canned fish were `spiked’ with known levels of BPA and BPF isomers by an independent laboratory (CSL, York) and delivered together with the unfortified samples to Pira International for `blind’ analysis. Quantitative results were within 90-120% of the values for levels of BPA and BPF added by CSL (table 1).

An estimate of the repeatability (95% probability level) of the analytical method was made by conducting six replicate analyses on the homogenized contents of a can of salmon (table 2).


Table 3. Results

					Pack 
					size 	Pack 			Bisphenol A 
					(g) 	type 	Country		(mg kg -1) 
Vegetables 
  Baked beans in tomato sauce 		220 	EO;3PC 	UK 		0.014; 0.011 
  Sliced green beans in salted water 	300 	3PC 	Holland 	0.037; 0.036 
  Processed peas in water 		199 	3PC 	UK 		0.016; 0.016 
  Sliced carrots in salted water 	180 	3PC 	UK 		0.010; 0.011 
  Baby carrots in sugared salt water 	195 	3PC 	Belgium 	0.041; 0.042 
  Chopped tomatoes with garlic 		400 	EO;3PC 	Italy 		0.027 
  Baked beans in tomato sauce 		415 	EO;3PC 	UK 		0.009 
  New potatoes in water, salt added 	300 	EO;3PC 	Belgium 	0.048 
  Peeled plum tomatoes in tomato juice	400 	3PC 	Italy 		0.026 
  Sweetcorn in water 			200 	EO;3PC 	Canada 		0.016 
Desserts 
  Evaporated milk 			170 	3PC 	not stated 	0.014; 0.011 
  Creamed rice 				425 	2PC 	UK 		0.007; 0.013 
  Custard 				425 	2PC 	UK 		n/d 
  Creamed rice 				213 	3PC 	UK 		0.010 
  Chocolate sponge pudding 		313 	3PC 	UK 		n/d; n/d 
Miscellaneous 
  Infant formula 			900 	EO;3PC 	UK 		n/d; n/d 
  Infant formula 			450 	EO;3PC 	UK 		n/d; n/d 
  Infant formula 			450 	EO;3PC 	not stated 	n/d 
Infant formula 				300 	EO;3PC 	France 		n/d 
  Fruit pieces in juice 		415 	EO;3PC 	Greece 		0.019 
  Fruit cocktail in syrup 		411 	EO;3PC 	Italy 		0.038; 0.037 
  Spaghetti rings in tomato sauce 	212 	EO;3PC 	UK 		0.041; 0.038 
  Pasta shapes in tomato sauce 		400 	EO;3PC 	UK 		0.009; <0.007 
  Spaghetti in tomato sauce 		400 	EO;3PC 	UK 		0.009 
  Spaghetti in tomato sauce 		410 	3PC 	UK 		n/d 
  Pasta shapes in tomato sauce 		213 	EO;3PC 	UK 		0.011 
  Chicken and ham in white sauce 	418 	3PC 	Holland 	0.052; 0.053 
  Ham 					200 	3PC 	Holland 	0.354; 0.422; 0.377 
  Hot dogs 				400 	3PC 	Holland 	0.033; 0.021 
  Chopped pork and ham 			200 	EO;3PC 	Denmark 	0.016; 0.017 
  Corned beef 				200 	EO;3PC 	Brazil 		0.059; 0.068; 0.070 

2,2-Bisphenol F not detected LOD=0.005 mg kg -1. 
2,4-Bisphenol F not detected LOD=0.005 mg kg -1. 
4,4-Bisphenol F not detected LOD=0.01 mg kg -1. 
Bisphenol A, LOD=0.002 mg kg -1, LOQ=0.007 mg kg -1. 
EO, easy open; 3PC, three-piece; 2PC, two-piece; n/d, not detected.

Table 4. Results

						Pack 
						size 	Pack 			Bisphenol A 
						(g) 	type 	Country		(mg kg -1) 
Fish 
  Sardines in tomato sauce 			120 	EO;2PC 	Portugal 	0.014; 0.014 
  Red salmon 					213 	2PC 	USA 		0.011; 0.011; 0.01; 0.01; 0.011; 0.01 
  Tuna chunks in brine 				185 	2PC 	Seychelles 	0.026; 0.026 
  Sardines in tomato sauce 			120 	EO;2PC 	Portugal 	0.032 
  Red salmon 					105 	EO;2PC 	Canada 		0.018; 0.013 
  Pilchards in tomato sauce 			305 	3PC 	South Africa 	0.018; 0.013 
  Red salmon 					212 	2PC 	USA 		0.018 
  Tuna chunks in brine 				185 	2PC 	Thailand 	0.031 
  Skipjack tuna in mayonnaise with sweetcorn	185 	2PC 	Thailand 	0.041; 0.044 
  Mackerel fillets in tomato sauce 		125 	EO;2PC 	Denmark 	n/d 
Beverages 
  Lemon & lime flavoured soft drink 		330 	EO;2PC 	not stated 	n/d; n/d 
  Orange soft drink 				330 	EO;2PC 	UK 		n/d; n/d 
  Orange soft drink 				330 	EO;2PC 	UK 		n/d; n/d 
  Soft drink with vegetable extracts 		330 	EO;2PC 	UK 		n/d; n/d 
  Strong ale 					500 	EO;2PC 	UK 		n/d; n/d 
  Dry cider 					440 	EO;2PC 	UK 		n/d 
  Best bitter 					440 	EO;2PC 	UK 		n/d 
  Strong continental lager 			440 	EO;2PC 	UK 		n/d 
  Super strength lager 				440 	EO;2PC 	UK 		n/d 
  Cola 						330 	EO;2PC 	UK 		n/d 
  Stout 					275 	EO;2PC 	UK 		<0.007 
Soup 
  Tomato soup 					425 	3PC 	UK 		0.020; 0.021 
  Minestrone soup 				295 	3PC 	UK 		n/d; n/d 
  Country vegetable soup 			400 	EO;3PC 	UK 		n/d 
  Cream of tomato soup 				425 	3PC 	UK 		n/d; n/d 
  Cream of tomato soup 				392 	3PC 	UK 		n/d; n/d 
  Cream of chicken soup 			400 	EO;3PC 	UK 		0.008; <0.007 
  Tomato soup 					400 	3PC 	UK 		n/d 
  Chicken & Vegetable 				400 	EO;3PC 	UK 		n/d 
  Chicken and white wine soup 			295 	3PC 	UK 		0.021 
  Cream of chicken soup 			290 	EO;3PC 	UK 		0.010 

2,2-Bisphenol F not detected LOD=0.005 mg kg -1. 
2,4-Bisphenol F not detected LOD=0.005 mg kg -1. 
4,4-Bisphenol F not detected LOD= 0:01 mg kg -1. 
Bisphenol A , LOD=0.002 mg kg -1, LOQ=0.007 mg kg -1. 
EO, easy open; 3PC, three-piece; 2PC, two-piece; n/d, not detected.

Bisphenol -b chart

 


Results and discussion

All results are presented in tables 3 and 4, and example GC/MS traces are given in figures 1 and 2. The results have been corrected for recovery obtained from the control samples. The calibration graphs had correlation coefficients of 0.995 or better. The mean relative recoveries obtained for BPA were in the range 81-103%. For BPF isomers the mean relative recoveries obtained were in the range 61-128%.

In all cases where BPA was quantified (50:007mg kg -1), the peak identity was confirmed by checking also for the m/z ion at 213.

There are few data from previous surveys of food or drink for BPA with which to compare the results. However, levels of BPA in canned vegetables were similar to those reported previously (Brotons et al. 1995, Yoshida et al. 2001).

Conclusions

Sixty-two different canned foods were purchased from retail outlets from January to November 2000 and the contents were extracted and analysed by GCMS for BPA and BPF isomers. BPF isomers were not detected in any of the canned foods with detection limits of 0.005mg kg -1 for the 2,2 0 and 2,4 0 isomers and 0.01mg kg -1 for the 4,4 0 isomer. BPA was detected in 38 samples with a detection limit of 0.002 mg kg -1. Of these, BPA was quantified in 37 samples with one sample of canned meat containing a mean level of 0.38mg kg -1. The result for this one sample probably reflected the use, at that time, of BPA as a cross-linking agent in the resin used to coat the can. All other samples contained <0.07 mg kg -1 BPA.

The GC/MS analytical method developed in this study has been shown to be reliable and have low limits of detection for BPA and BPF and it can be applied to a wide range of food types.

After completion of this survey, the UK Food Standards Agency submitted the results for consideration by the independent Committee on Toxicity of Chemicals in Food, Consumer Products and the Environment (COT). In their statement, the COT acknowledged the uncertainties that existed in the scientific understanding of potential endocrine effects of BPA. Nevertheless, on present evidence, it concluded that the levels of BPA identified in canned foods analysed in this survey are unlikely to be of concern to health, and that there is no reason for consumers to change their source of foodstuffs as a result of these findings.

Acknowledgements

The authors thank the Food Standards Agency, UK, for funding this work.

References

Biederman, M., and Grob, K., 1998, Food contaminants from epoxy resins and organosols used as can coatings: analysis by gradient NPLC. Food Additives and Contaminant s, 15, 609-618.

Biles, J. E., McNeal, T. P., and Begley, T.H., 1997, Determination of bisphenol A migrating from epoxy can coatings to infant formula liquid concentrates. Journal of Agricultural Food Chemistry, 45, 4697-4700.

Brotons, J. A., Olea-Serrano, M. F., Villalobos, M. Pedraza, V., and Olea, N., 1995, Xenoestrogens released from lacquer coatings in food cans. Environmental Health Perspectives, 103, 608-612.

Cooper, I., Bristow, A., Tice, P. A., and O’Brien, A. P., 1996 Methods of Analysis to Test for Migration from Coatings on Metal Containers. Final Report Ministry of Agriculture, Fisheries and Food, UK, Project FS 2217.

European Commission, 1990, Commission Directive 90/128/EEC of 23 February 1990 relating to plastics materials and articles intended to come into contact with foodstuffs. Official Journal of the European Communities, L75/10, 19 March 1990.

Franz, R., and Rijk, R., 1997, Development of methods of analysis for monomers and other starting substances with SML and/or QM limits in Directives 90/128/EEC and 92/39/EEC. Standards , Measurements and Testing Programme. Report EUR 17610 EN.

Howe, S. R and L. Borodinski, L., 1998, Potential exposure to bisphenol A from food contact use of polycarbonate resins. Food Additives and Contaminant s, 3, 370-376.

Kawamura, Y., Sano, H., and Yamada, T., 1999, Migration of bisphenol A from can coatings to drinks. Journal of the Food Hygienic Society of Japan, 40, 158-165.

Lintschinger , J., and Rauter, W., 2000, Simultaneous determination of bisphenol A diglycidyl ether, bisphenol F diglycidyl ether and their hydrolysis and chlorohydroxy derivatives in canned foods. European Food Research Technology, 211, 211- 217.

Mountfort, K., Kelly, J., Jickells, S. M., and Castle, L., 1997, Investigations into the potential degradation of polycarbonate baby bottles during sterilisation with subsequent release of bisphenol A. Food Additives and Contaminants, 14, 737-740.

Vom Saal, F. S., Cooke, P. S. Buchanan, D. L., Palanza, P., Thayer, K. A. Nagel, S. C., Parmigiani, S., and Welshons, W. V., 1998, A physiologically based approach to the study of bisphenol A and other estrogenic chemicals on the size of reproductive organs, daily sperm production and behaviour. Toxicology and Industrial Health, 14, 239-260.

Yoshida, T., Horie M., Hoshino, Y., and Nakazawa, H., 2001, Determination of bisphenol A in canned vegetables and fruit by high performance liquid chromatography. Food Additives and Contaminant s, 18, 69-75.

http://www.mindfully.org/Plastic/Plasticizers/BPA-BPF-Canned-FoodsAug02.htm

 

 

Study-BPA and Behavioural Issues Linked?

http://www.growingyourbaby.com/2009/10/07/study-bpa-and-behavioural-issues-linked/

by Shannon in Baby’s health, pregnancy


There is a new study that is out which was done by researchers at the University of North Carolina and British Columbia’s Simon Fraser University. It is the first time that they are looking at links between prenatal BPA (bisphenol A exposure) exposure and behavioural issues in kids.

“Daughters of women who were exposed to a common chemical found in plastics while they were pregnant are more likely to show aggressive and hyperactive behaviours as two-year-olds, a new study shows.”

The study did show that the girls who had mothers that were exposed to the BPA while pregnant did have more “externalized” behaviour than the average two year old.

The chemical concentrations between 13 and 16 weeks of pregnancy were most strongly associated with behaviour problems in girls, but the study found no significant effect on boys.

Externalized behaviour includes more aggression and hyperactivity.

The women were followed during their pregnancy and until the children turned two years old. They measured the concentration in their urine at week 16, 26 and birth. The BPA was found in 90 percent of the urine samples taken. At the age of five the girls will be tested again.

BPA, a hormone disrupter that can cause reproductive damage and lead to prostate and breast cancer in adulthood, is a building block in polycarbonate plastic. People are exposed to BPA through medical tubing, some hard plastic water bottles, some baby feeding bottles, dental fillings, food-can and packaging linings, and carbonless paper.

In October of 2008 Canada was the first to declare BPA hazardous to the health and welfare of humans. They also made sure that the baby industry was not allowed to use the BPA in baby bottles.

While there was a measurable increase in aggressive behaviour among girls, the study also showed some evidence of increased depression and anxiousness among BPA-exposed boys — a finding Lanphear said needs further study.

My advice would be to stay away from anything containing BPA before even getting pregnant so then you know that you are not placing yourself at risk.

http://www.growingyourbaby.com/2009/10/07/study-bpa-and-behavioural-issues-linked/

 

 

Bisphenol A

Sunday, November 18th, 2007

http://betterdaycarefoodnetwork.org/category/bisphenol-a/

Bisphenol AAbundant exposure in daycares!

Why abundant? Because of the common use of canned food and the heating up of milk in plastic baby bottles.

Cans can actually contain more bisphenol A than baby bottles, but even very small exposures are dangerous.

Are you wondering what this type of exposure could do to your child? Here are two pictures of normal mouse breast tissue versus breast tissue exposed to bisphenol A.

pat871762862.png

Healthy Breast Tissue vs Breast Tissue on Bisphenol A

Source: http://ourstolenfuture.com/munozdetoroetal.htm

Here is an excerpt from a Globe and Mail article:

“Experiments on lab animals exposed to small doses of BPA have linked it to low sperm counts, the earlier onset of puberty, insulin resistance and diabetes, prostate abnormalities and skewed mammary gland development, among other effects. Some researchers, such as Dr. vom Saal, worry that these sorts of adverse effects, if they occur in people, seem to mirror recent human disease and health trends.” The Globe and Mail used the same pictures posted above in the actual newspaper.http://www.theglobeandmail.com/specialScienceandHealth

Levels of exposure from canned food:

pat540829840.jpg

Source: http://www.ewg.org/node/20936

Urge your Daycare to take Action on bisphenol A

http://www.environmentaldefence.ca/daycarecentre.htm

Toronto Board of Health: When parents Deryk Jackson and Andreea Ionescu did a deputation with the board of health on the subject of trans fats, other chemical exposures in daycare were also mentioned, such as bisphenol A. A motion was proposed and passed by the board of health to have a report addressing the “top ten other food additives or container properties which may harm children’s health at childcare centres”. We are still waiting for this list to come out. There was no deadline for when such a list should be put forward by the board of health. We would like it sooner rather than later.

Can you relax about phthalates? The answer is no.

http://www.ourstolenfuture.org/phthalates.htm

More Scary Information about bisphenol A and other types of endocrine disrupters:

http://www.ourstolenfuture.org/bpauses.htm

http://betterdaycarefoodnetwork.org/category/bisphenol-a/

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