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Tibicos are a symbiotic culture of bacteria and yeasts held in a polysaccharide biofilm matrix created by the bacteria. As with kefir grains, the microbes present in tibicos act in symbiosis to maintain a stable culture. Tibicos can do this in many different sugary liquids, feeding off the sugar to produce lactic acid, alcohol (ethanol), and carbon dioxide gas, which carbonates the drink. Tibicos is also known as tibi, water kefir grains, sugar kefir grains, Japanese water crystals and California bees, and in older literature as ''bébées'', African bees, ale nuts, Australian bees, balm of Gilead, beer seeds, beer plant, bees, ginger bees, Japanese beer seeds and vinegar bees, Tibicos are found around the world, with no two cultures being exactly the same. Typical tibicos have a mix of ''Lactobacillus'', ''Streptococcus'', ''Pediococcus'' and ''Leuconostoc'' bacteria with yeasts from ''Saccharomyces'', ''Candida'', ''Kloeckera'' and possibly others. ''Lactobacillus brevis'' has been identified as the species responsible for the production of the polysaccharide (dextran) that forms the grains. Pidoux (1989)〔 also identifies the sugary kefir grain with the ginger beer plant. Certainly opportunistic bacteria take advantage of this stable symbiotic relation which might be the reason for the many different names/distinction in the scientific literature. Different ingredients or hygienic conditions might also change the fungal and bacteriological composition, leading to the different names. People who do not wish to consume dairy products may find that water kefir provides probiotics without the need for dairy or tea cultured products, such as kombucha. The finished product, if bottled, will produce a carbonated beverage. It will continue to ferment when bottled thus producing more carbonation—so bottles need to be capped loosely and allowed to breathe, or they may become explosive. ==Origin== At least two references in the scientific literature relate to the origin of the tibi. According to the first paper, tibicos forms on the pads of the ''Opuntia'' cactus (from Mexico) as hard granules that can be reconstituted in a sugar-water solution as propagating tibicos. The second paper refers to a specific bacteria cultured from known stocks with properties similar to those in tibi. Tibicos are used to brew a variety of tepache known as ''tepache de tibicos''.〔http://www.cabdirect.org/abstracts/19950314684.html;jsessionid=DC91A19C32DD763E770932398B531AFB〕 The ''ginger beer plant'' is also a form of tibicos. Kebler attests that they were used in Kentucky circa 1859 to brew a "home drink" and were referred to as "japanese beer seeds".〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「tibicos」の詳細全文を読む スポンサード リンク
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