Ko te mahi matua a te Kaiwhakawai Waikawa i roto i te whāngai he whakaiti i te uara pH me te kaha here waikawa o te whāngai. Mā te tāpiri i te kaiwhakawaikawa ki te whāngai ka whakaiti i te waikawa o ngā wāhanga whāngai, ka whakaiti i te taumata waikawa i roto i te puku o ngā kararehe, ka whakanui ake hoki i te mahi pepsin. I taua wā anō, ka pā ki te waikawa o ngā ihirangi o te puku, kātahi ka pā ki te tukunga me te mahi o te amylase, te lipase me te trypsin, kia pai ake ai te nakunaku o te whāngai.

Mā te tāpiri i te waikawa ki te kai a ngā poaka kua whakamutua te kai ka taea te whakaiti i te waikawa o te kai, te whakapai ake i te pānga waikawa, me te whakanui ake i te tere o te whakamahinga o te kai i roto i te ara puku. I whakaatuhia e ngā rangahau a Xing Qiyin me ētahi atu, ina iti te kaha waikawa o te kai, ka taea te whakahaere i te horapa o te harore i roto i te kai, ka taea te ārai i te harore o te kai, ka taea te pupuri i te hou o te kai, ā, ka taea hoki te whakaiti i te tere o te mate korere o ngā poaka.

Kei te pikitia e whai ake nei te mahi a te Kaiwhakawai Waikawa i roto i ngā kararehe, tae atu ki ēnei āhuatanga:

1) Ka taea e ia te whakaiti i te pH i roto i te puku o ngā kararehe, kātahi ka whakahohe i ētahi whākōkī nakunaku nui. Ka pāngia te pānga o ngā āhuatanga ā-tinana me te matū o ngā waikawa waro ki te whakaiti i te pH o ngā ihirangi o te puku. Ko ngā uara pKa o te waikawa malic, te waikawa citric me te waikawa fumaric kei waenganui i te 3.0 me te 3.5, nō ngā waikawa kaha-waenga, ka taea te wehewehe tere i te H+ i roto i te puku, te whakaiti i te taumata waikawa i roto i te puku, te whakatairanga i te whakaputanga o te pepsin, te whakapai ake i te mahi nakunaku, kātahi ka tutuki te pānga waikawa.

He rerekē ngā pānga o ngā waikawa he rerekē ngā nekehanga o te wehenga. I roto i te mahi, ka taea te whiriwhiri i ngā waikawa he nui ngā nekehanga o te wehenga hei whakaiti i te uara pH o te ara kai, ā, ka taea te whiriwhiri i ngā waikawa he iti ngā nekehanga o te wehenga hei whakahoromata.

2) Ka taea e ngā waikawa te whakahaere i te taurite moroiti o te ara whekau kararehe, te whakangaro i te kiriuhi pūtau huakita, te whakararuraru i te hanganga o ngā whākōkī huakita, te whakatutuki i ngā pānga bacteriostatic, bactericidal rānei, ā, nā reira ka ārai i ngā mate whekau kararehe i puta mai i ngā moroiti pathogenic.

He rerekē ngā pānga bacteriostatic o ngā waikawa waro pūngoi noa me ngā waikawa waro kore-pūngoi, he rerekē ngā momo me te nui o ngā Kaiwhakawaikawa, ā, he rerekē hoki ngā pānga aukati me te whakamate i ngā huakita pathogenic i roto i te ara kai o ngā kararehe.

I whakaatuhia e ngā hua whakamātautau ko te nui rawa o te waikawa i tāpirihia ki te whāngai he 10 ~ 30kg/T, ā, mā te whakamahi nui rawa ka arahi pea ki te waikawa i roto i ngā kararehe. I kitea e Cui Xipeng me ētahi atu he rerekē ngā ōwehenga o tepāhare pākawa waroki te whāngai he pānga bacteriostatic mārama. Ina whakaarohia whānuitia, ko te nui tāpiri e taunakitia ana ko te 0.1%

3) Whakaroa i te tere o te whakawātea o te kai i roto i te puku, me te whakatairanga i te nakunaku o ngā matūkai i roto i te puku me ngā whekau. I kitea e Manzanilla me ētahi atu mā te tāpiri i te 0.5% waikawa formic ki te kai a ngā poaka kua whakamutua te kai ka taea te whakaiti i te tere o te whakawātea o ngā mea maroke o te puku.

4) Whakapai ake i te reka.

5) Ārai i te ahotea, whakapai ake i te mahi tipu.

6) Whakapai ake i te whakamahinga o ngā matūkai iti i roto i te kai.