NO - Besoin d'assistance

Processing and Bioavailability (WG2) page 25
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B.2 Operations specific for each type of product
6 Crushing and breaking of tomatoes
(juice, puree, paste)
Survey of references:
D Avoid high temperatures if not strictly
necessary (HB)
Rao and Agarwal (1999) detected a 15.8% lycopene depletion on a production line of
tomato juice, although they expressed doubts as to the effective representativity of the sample.
They found no further lycopene loss in any subsequent processing operations.
Reference has already been made to the study by Tamburini et al. (1999), according to
which the hot-break juice extraction technique lessens the initial lycopene content because of
the severe heat effect, although allowing the tomato cell structure to remain almost unchanged
preserves lycopene more efficiently over time.
Comments and topics
The operation would not appear to give rise to lycopene reductions; in the case of hotbreak
products, the high heating temperature may cause lycopene reductions, but this is offset
by the greater integrity of the cells and thus by the better resistance of the lycopene granules
to oxidation.
Is this step an RCPL ?
Q1 Q2 Q3 Q4 result
Yes No No No