Thanks for the response. To answer some of your questions: I'll be graduating with a MSc in chemical engineering and biotechnology this summer and am doing my thesis project in a molecular biology lab, so I'm comfortable with all techniques required. I've read a number of papers on both 16S RNA analysis and DNA tests for meat product species identification. As for scientific value, I don't have any illusions or want anyone to have any: There's none. I think something can be scientifically uninteresting but still worth doing though.
In vivo cloning is strictly regulated where I live, so sequencing would be performed on PCR products. The 16S RNA gene(s) would be amplified and sequenced from the near beginning. Using universal primers 27F and 1492 R gives an amplicon size of ~1500 bp. An amplicon size/sequence read of the 600 first bp are enough to cover hypervariable regions V1-V3 (an overview of the E. coli 16S RNA sequence is shown by Baker and Cowan, 2003:
http://www.sciencedirect.com/science/article/pii/S0167701203002276).
I don't know why I mentioned 16S RNA when talking about meat, thanks for catching that mistake. For animal samples, species-specific DNA may be detected by amplification of species-specific sequences or identification may be attempted amplification and sequencing of the cytochrome b gene. See for example
http://library-resources.cqu.edu.au/JFS/PDF/vol_48/iss_1/JFS2002128_481.pdfI agree that culturing environmental samples might be challenging. "Just a few" would be exactly my goal, but I understand people might not find that interesting enough. Analysis of meat samples seems like a simpler and perhaps more interesting prospect. Sample material is easily available, and the methods may be of a bit wider interest. Everyone wants to know what they're eating, right? As recent events in Europe show, food companies and the government can not necessarily be trusted to guarantee the content of processed food products.
Actually, I think the cost estimates are about right for primer and sequencing costs. As mentioned, I'm discussing ideas for a *small* project. Single-read sequencing costs about €4/reaction, so for €200 you'd get about 50 sequencing reactions (not including shipping, but there's a collection point nearby). For the same amount you would get a fair selection of primers which should be enough to last for several hundred reactions each. Mind you, I would not be looking to cover all costs of running a hobby lab - just the project-specific expenses. So PCR reagents, purification kits etc. would not be included. I already spent quite a lot of money on that, but there's not so much left now.
Here's some relevant papers, for anyone who's curious:
Weisburg et al. 1991: 16S ribosomal DNA amplification for phylogenetic study.
http://jb.asm.org/content/173/2/697.full.pdf+html
Lahiff et al. 2001: Species-specific PCR for the identification of ovine, porcine and chicken species in meta and bone meal (MBM). http://www.ncbi.nlm.nih.gov/pubmed/11284433Lago et al. 2011: Authentication of species in meat products by genetic techniques.
http://link.springer.com/article/10.1007%2Fs00217-010-1417-1?LI=true#page-1Regards,
Jarle P