Yeh Hsiang-Yu, Su Nan-Wei, Lee Min-Hsiung
Graduate Institute of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan.
J Agric Food Chem. 2005 Jun 1;53(11):4361-6. doi: 10.1021/jf050243g.
Fiber-rich materials including desalted shoyu mash residue (briefly referred as desalted mash residue, DMR), alcohol-insoluble solid (AIS), and water-insoluble solid (WIS) were prepared from shoyu mash residue, which is a filtration cake obtained during the isolation of shoyu by press filtration of fermented matrix in the final process. The DMR, AIS, and WIS contain rich dietary fiber of 52.4, 61.5, and 54.7 wt %, respectively. The DMR, AIS, and WIS all have significantly lower bulk densities, and higher water-holding capacities, oil-holding capacities, swelling abilities, and cation-exchange capacities than the control cellulose. These results indicated that the said fiber-rich materials prepared in this study all have the desired physicochemical properties for being used as satisfactory sources of dietary fibers or low-calorie bulk ingredients in food applications requiring oil and moisture retention. Furthermore, the said fiber-rich materials also have high contents of isoflavones, mainly daidzein and genistein, which are considered as the most bioavailable phytoestrogens, with a total amount of about 1200-1480 micromol/100 g (equal to daidzein of ca. 3040-3759 microg/g, or genistein of 3240-3996 microg/g). The results revealed that the said fiber-rich materials might be a potent fiber source for health foods.
富含纤维的材料，包括脱盐酱油粕残渣（简称为脱盐粕残渣，DMR）、醇不溶性固体（AIS）和水不溶性固体（WIS），是由酱油粕残渣制备而成的。酱油粕残渣是在酱油生产的最后阶段，通过对发酵基质进行压滤分离酱油时获得的滤饼。DMR、AIS和WIS分别含有52.4%、61.5%和54.7%的丰富膳食纤维。与对照纤维素相比，DMR、AIS和WIS的堆积密度均显著较低，而持水能力、持油能力、膨胀能力和阳离子交换能力均较高。这些结果表明，本研究中制备的上述富含纤维的材料均具有所需的物理化学性质，可作为在需要保留油脂和水分的食品应用中令人满意的膳食纤维来源或低热量填充成分。此外，上述富含纤维的材料还含有高含量的异黄酮，主要是大豆苷元和染料木黄酮，它们被认为是生物利用度最高的植物雌激素，总量约为1200 - 1480微摩尔/100克（相当于约3040 - 3759微克/克的大豆苷元，或3240 - 3996微克/克的染料木黄酮）。结果表明，上述富含纤维的材料可能是保健食品的一种有效纤维来源。
