Method for producing tomato paste and powder using reverse...

A - Human Necessities – 23 – L

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A23L 1/212 (2006.01)

Patent

CA 2567388

Method for producing tomato paste and powder using both reverse osmosis and evaporation. A tomato juice is separated into a juice and a first pulp. The juice is clarified with a centrifuge and/or filter to produce a clarified juice and a second pulp component. The clarified juice is processed with reverse osmosis to produce a pre-concentrated juice by removing a first portion of water. The pre-concentrated juice is provided to a multi-effect evaporator, which removes a second portion of water to form a concentrate. Thermal vapor recompression can be used to recycle steam that is used during evaporation. The concentrate is mixed with the first pulp component or a pulp mixture to produce an intermediate paste, which is processed to produce a tomato paste by combining juice and pulp components. Tomato powder can also be produced.

Un système de production de pâte de tomates et d'une poudre de tomates utilisant à la fois l'osmose inverse et l'évaporation, un jus de tomates est séparé en jus et en une première pulpe. Le jus est clarifié au moyen d'une centrifugeuse et/ou d'un filtre afin d'obtenir un jus clarifié et un second composant de pulpe. Le jus clarifié est traité par osmose inverse afin d'obtenir un jus pré-concentré par retrait d'une première partie de l'eau. Le jus pré-concentré est acheminé vers un évaporateur multi-effet, qui retire une seconde partie d'eau afin d'obtenir un concentré. La recompression par vapeur thermique peut servir à recycler la vapeur que l'on utilise pendant l'évaporation. Le concentré est mélangé avec le premier composant de pulpe ou un mélange de pulpe d'obtenir une pâte intermédiaire, qui est traitée afin d'obtenir une pâte de tomates par combinaison des composants du jus et de pulpe. La poudre de tomates peut également être obtenue.

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