Abstract:
:Plant and microbial phytases present in raw materials can cause a dephosphorylation of phytate (myo-inositol hexakisphosphate) (InsP6)) during food processing resulting in a broad range of different myo-inositol phosphates such as pentakisphosphate (InsP5) and tetrakisphosphate (InsP4) in foods. Here, we investigated whether the human intestinal epithelium is able to dephosphorylate myo-inositol phosphates (InsP6, InsP5-, InsP4-, InsP3-isomers) using an in vitro model with differentiated human Caco-2 cells cultured on semipermeable inserts. Incubation of InsP6 and an InsP5-isomer with cells for 3 h showed no dephosphorylation of both InsPs. Treatment of cells with a mixture of different InsP4-isomers, however, caused a formation of about 3.5% of an InsP3-isomer (Ins(1,5,6)P3) and treatment with a mixture of different InsP3-isomers caused about 20% formation of InsP2-isomers, respectively. Thus, human intestinal cells can contribute to the dephosphorylation of myo-inositol phosphates of partly dephosphorylated forms such as InsP3 and InsP4.
journal_name
Int J Food Sci Nutrjournal_title
International journal of food sciences and nutritionauthors
Briviba K,Schollenberger M,Rodehutscord M,Greiner Rdoi
10.1080/09637486.2017.1330404subject
Has Abstractpub_date
2018-02-01 00:00:00pages
46-51issue
1eissn
0963-7486issn
1465-3478journal_volume
69pub_type
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