Organic Acid Production

Lactic acid is used to a slight extent in many industries of which the tanning industry is perhaps the largest. It is used for neutralizing the lime left in the hides, after liming. The sources of lactic acid are skimmed milk, and the carbonaceous part of grains. The reaction from hydrolyzed starch to lactic acid is CgHiaOj 2CjH*OHCOaH. Lactic acid bacteria producing high percentages, acid, are used in fermenting skimmed milk or hydrolyzed starches. A carbonate, either calcium carbonate or zinc...

Info

Can readily be correlated with a predominance of bacterial instead of mold activity. A low brine content in the moromi while fermentation is in progress, as well as too high a temperature during this period, produces conditions favoring these undesirable flavors. There are many difficulties in conducting a process like the manufacture of soy sauce. If this were not true the process would not be regarded as secret, as it so generally is in the Orient. In Japan the process of shoyu manufacture is...

Soy Bean Sauce Manufacture

A. has given a very informative description of Soy-Sauce making by the Japanese. She says The process of manufacture which produces soy-bean sauce, or, as it is called in Japan, shoyu, begins with the preparation of the ingredients and includes a preliminary mold fermentation, followed by a ripening in brine. The soy beans, having been cooked and mixed with prepared wheat, are inoculated with the shoyu mold or ferment. This mold is procured commercially in Japan under the...

Plate

Fibre Retting Bacteria

Epidermis test of flax fibers when retting is nearly complete. The fibers are well separated and of fine diameter. Pieces of outicle c are clinging in spots. When this stage of retting is reached It is necessary to Bwish the fibers to and fro in water in order to tell whether the epidermis is well loosened. Flax fibers at the completion of the epidermis test. Retting is at the same stage as that shown in figure next above. The oortex is shown after it has been swished to and fro in water....