Lactose was determined in dried squid shred by spectrophotometry at the wavelength of 510nm mixed solution of phenol , sodium hydroxide , picric acid and sodium hydrogen sulphite as color - developing agent .

以苯酚、氢氧化钠、苦味酸和亚硫酸氢钠混合溶液为显色剂，分光度法测定鱿鱼丝中乳糖含量。