As shown in Fig. 1, the firmness of shiitake mushroom showed
varying degrees of reduction over time. By day 20, the firmness of
the treated samples were significantly higher than those of the
control samples (P < 0.05). It was clear that the texture of oil fumigated
mushrooms was better retained than that of the control
mushrooms during storage, showing that these natural compounds
somehow could reduce the action of cell-wall degrading enzymes.
In addition, the kind of bacterial-induced softening was observed
in control samples but was inhibited by essential oil fumigation
treatments. In fact, a number of EOs and several of their individual
components exhibit antibacterial activity against food borne
pathogens in vitro and, to a lesser extent, in foods. Valverde et al.
(2005) found that the addition of eugenol, menthol or thymol
inside packages was effective in reducing the microorganism proliferation
in table grapes, the effect being higher for yeast and
moulds than for mesophilic aerobes. These results showed beneficial
effects of these essential oils, especially cinnamaldehyde, on
increasing the shelf life of shiitake mushrooms, since it has been
postulated that mushroom softening and texture changes during
storage determine mushroom storability and shelf life, as well as
reduced incidence of decay and less susceptibility to mechanical
damage (Gao, Feng, & Jiang, 2014).
As shown in Fig. 1, the firmness of shiitake mushroom showed
varying degrees of reduction over time. By day 20, the firmness of
the treated samples were significantly higher than those of the
control samples (P < 0.05). It was clear that the texture of oil fumigated
mushrooms was better retained than that of the control
mushrooms during storage, showing that these natural compounds
somehow could reduce the action of cell-wall degrading enzymes.
In addition, the kind of bacterial-induced softening was observed
in control samples but was inhibited by essential oil fumigation
treatments. In fact, a number of EOs and several of their individual
components exhibit antibacterial activity against food borne
pathogens in vitro and, to a lesser extent, in foods. Valverde et al.
(2005) found that the addition of eugenol, menthol or thymol
inside packages was effective in reducing the microorganism proliferation
in table grapes, the effect being higher for yeast and
moulds than for mesophilic aerobes. These results showed beneficial
effects of these essential oils, especially cinnamaldehyde, on
increasing the shelf life of shiitake mushrooms, since it has been
postulated that mushroom softening and texture changes during
storage determine mushroom storability and shelf life, as well as
reduced incidence of decay and less susceptibility to mechanical
damage (Gao, Feng, & Jiang, 2014).
การแปล กรุณารอสักครู่..
