WiththeexpansionofboththecaneandbeetsugarindustriesinChina,thecolourofwhitesugarproducedinthetraditionalChinesefactoryhasincreasedandbecomeacriticalproblem.Thecolourofsugarfromsulphitationistypically150ICUMSAColourUnits(IU).Valuesofupto200IUormorearenotun...[繼續閱讀]