In the experiments on efficacy of R. mucilaginosa for reducing
natural decay development, natural disease incidence of strawberries was significantly reduced by R. mucilaginosa following
storage at 4 C for 20 d followed by 20 C for 5 d. This implies that
R. mucilaginosa has potential to control a wide range of pathogens
under normal shelf-life conditions (including both low temperature
and ambient storage). Furthermore, the results from this study
showed that the biological control activity of R. mucilaginosa
against natural decay of strawberries was greatly enhanced by PA
compared with R. mucilaginosa used alone at 4 C for 20 d followed
by 20 C for 5 d. In the experiments of effects of R. mucilaginosa in
combination with PA (4 mmol/ml) on postharvest quality parameters of strawberries, no impaired quality parameters including
weight loss, fruit firmness, titratable acidity, browning potential
and ascorbic acid were discovered in the fruits under commercial
conditions (our unpublished data). R. mucilaginosa works as
a nutrient competitor, may consume sugar in the face of strawberry
fruit, however, no matter it was used only or combined with PA at
the concentration of 4 mmol/ml, did not decrease total soluble solids
(which composed mainly of soluble sugar) of strawberry fruit (our
unpublished data). Since that PA has no risks to humans and to the
environment, and that PA is a cheap and widely available natural
component, the utilization of PA might be an effective, safe and
economic approach to enhance the biocontrol efficacy of
R. mucilaginosa to postharvest decay of strawberries.
In the experiments on efficacy of R. mucilaginosa for reducingnatural decay development, natural disease incidence of strawberries was significantly reduced by R. mucilaginosa followingstorage at 4 C for 20 d followed by 20 C for 5 d. This implies thatR. mucilaginosa has potential to control a wide range of pathogensunder normal shelf-life conditions (including both low temperatureand ambient storage). Furthermore, the results from this studyshowed that the biological control activity of R. mucilaginosaagainst natural decay of strawberries was greatly enhanced by PAcompared with R. mucilaginosa used alone at 4 C for 20 d followedby 20 C for 5 d. In the experiments of effects of R. mucilaginosa incombination with PA (4 mmol/ml) on postharvest quality parameters of strawberries, no impaired quality parameters includingweight loss, fruit firmness, titratable acidity, browning potentialand ascorbic acid were discovered in the fruits under commercialconditions (our unpublished data). R. mucilaginosa works asa nutrient competitor, may consume sugar in the face of strawberryfruit, however, no matter it was used only or combined with PA atthe concentration of 4 mmol/ml, did not decrease total soluble solids(which composed mainly of soluble sugar) of strawberry fruit (ourunpublished data). Since that PA has no risks to humans and to theenvironment, and that PA is a cheap and widely available naturalcomponent, the utilization of PA might be an effective, safe andeconomic approach to enhance the biocontrol efficacy ofR. mucilaginosa to postharvest decay of strawberries.
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