Food additive databaseprocessing agentChecked 2026-10-02

Copolymer of Vinylimidazole/Vinylpyrrolidone (PVI/PVP) ビニルイミダゾール・ビニルピロリドン共重合体

Designated additiveNot on the EU additive list

Purpose: processing agent
On the label: “ビニルイミダゾール・ビニルピロリドン共重合体” (vinylimidazole/vinylpyrrolidone copolymer) (not labeled when it counts as a processing aid)
Name in the List of Designated Additives: ビニルイミダゾール・ビニルピロリドン共重合体 (No. 329)

In Japan

A processing agent used in making wine. Under the standards for use, it is limited to wine and the grape juice used to make it, at up to 0.50 g per liter of wine, and it must be removed before the final food is completed.
When it counts as a processing aid, for example because it is removed before the food is completed, it is exempt from labeling in the ingredient list (the Food Labeling Standards).

Japan's standards for use

Only for grape juice and wine used in making wine
Up to 0.50 g per liter of wine (when used in grape juice, it is treated as used in wine)
Must be removed before the final food is completed

This is a summary of the standards for use. See the source list for the exact conditions.

In the EU

It is not on the EU list of food additives (Regulation (EC) No 1333/2008, Annex II), so it cannot be used as a food additive in the EU.
In the EU, Annex I of Delegated Regulation (EU) 2019/934 lists the use of PVI/PVP copolymer as a winemaking practice.

Sources

Checked 2026-10-02. Rules and evaluations change over time. This page is a translation of our Japanese page; if they differ, the Japanese page is the reference.

This page lists facts stated in laws and in evaluations by public bodies; it is not a safety verdict. Additives used in Japan are approved by the government, which sets the foods and amounts they can be used in. The ADI is a guide to the amount that is considered safe to take every day over a lifetime.

Other substances used as processing agent

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