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Table 2

Effect of the HHP treatments and storage temperature on microbial counts (log colony forming units, CFU g-1) PPO activity and polyphenolic profile of the GRP.

Parameter Treatment Storage Temperature Treatment × Storage Temperature
Mesophilics Significance *** *** ***
% Variation 48.8 43.7 4.8
Molds and yeasts Significance *** ns ns
% Variation 97.3 0.2 0.4
Enterobacteriacea Significance * ns *
% Variation 28.5 7.1 28.5
PPO activity Significance ns ns ns
% Variation 6.1 15.0 7.6
Anthocyanin Significance * *** n.s.
% Variation 5.0 82.9 3.8
Flavanols Significance * *** *
% Variation 15.0 35.6 26.9
Flavonols Significance * *** *
% Variation 2.7 89.7 3.2
Phenolic Acids Significance * ns ns
% Variation
Stilbenes Significance ns *** *
% Variation 2.0 87.1 4.8
Total polyphenols Significance ** *** **
% Variation 9.2 69.3 13.0

HHP1: 600 MPa/1s; HHP2: 600 MPa/300s; HHP3: 600 MPa/1s (2 cycles); HHP4 cycles (b): 400 MPa/1s (first cycle) / 600 MPa/1s (second cycle).

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