加工过程中，使玄参内部变成乌黑色的成分属于

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26297' and id < 2199927 and id<>'2199927' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26297' and id > 2199927 and id<>'2199927' order by id asc limit 5