pichu 在 2004-10-21 09:09 PM 發表: 我的學校在中一都有通識了....(我今年中三,計返條數...= ="")(老la..上堂都唔明BIO的維他命C什麼的...) 我唔係講左la咩[E-Swe] 如果一樣food入面有愈多Vitamin C, DCPIP(Dichlorophenol indophenol) 就會被decolourize得愈快...我諗你mean呢D PS Vitamin C會溶於水/being oxidized so, to ensure the result is accurate Use fresh food 同埋dark colour juice會mask左個result |