In order to evaluate the effect of ultra-high pressure(350MPa/10min)combined with 2.0% chitosan coating treatment on the storage quality of Chinese chestnuts, this study determines the changes in respiratory intensity, starch content, decay rate, weight loss rate and pest-infected fruit rate during single treatment of ultra-high pressure and chitosan coating as well as the combination of two treatments. It was found that the chestnuts showed good storage results when stored at temperatures of 2-10 ℃ for 120 days, with the decay rate of 5.21 %, the pest-infected fruit rate of 2.82 %, and the weight loss rate of 4.73 %. The results indicated that ultra-high pressure and chitosan coating were significantly effective in reducing respiratory intensity, fruit decaying and starch degradations, of which the effect of ultra-high pressure was better than chitosan coating in this regard. Ultra-high pressure mainly contributed to the reduce of pest-infected fruit rate, but had no obvious effect on preventing water loss. On the other hand, chitosan coating was the primary factor to reduce water loss, but did not affect disinfestation. However, a combination of both two treatments produced significant synergistic and complementary effects in inhibiting breathing, sterilization, disinfestation, reducing starch degradation and reducing quality loss, thus improving chestnut storage effect.
GU Renyong
,
YANG Wangen
. Effects of ultra-high pressure combined with chitosan coating on preservation of Chinese chestnuts[J]. Food and Fermentation Industries, 2019
, 45(24)
: 168
-172
.
DOI: 10.13995/j.cnki.11-1802/ts.021905
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