Beans Cultured with Yogurt
Lactobacillus acidophilus is the main culture contained in yogurt. Although it eats many types of sugars, it's biproduct is mainly lactic acid and whether it reduces oligosaccharides is largely unknown. 


  "...little information is available on FOS transport and metabolism by lactic acid bacteria and other probiotic bacteria." http://aem.asm.org/content/69/4/2217.abstract


If you wanted to experiment with it you could try the traditional yogurt incubation method by mixing a few tablespoons of fresh yogurt into the beans around 110 degrees F and letting it incubate at that same temperature from 10-24 hours. Be careful though, the incubation could also bring about unwanted cultures as well.