|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5767564||1628387||2017||8 صفحه PDF||سفارش دهید||دانلود رایگان|
- Michelia alba oil in vapor was able to inhibit the spore and mycelium of Aspergillus flavus.
- Michelia alba oil in the vapor phase extends the shelf-life of brown rice by 4-fold.
- The synergistic effect of linalool and caryophyllene at the ratio of 10:1 was found.
- Cooked brown rice with Michelia alba oil in vapor showed good qualities.
- Michelia alba oil in vapor could decrease the hardness of the cooked rice.
The objectives of this study were to investigate the effect of essential oil (Michelia alba) vapor on the spore germination and mycelium growth of Aspergillus flavus on brown rice and to perceive the shelf life of the brown rice could be extended to a longer storage time. Different volumes (150, 300, 450Â Î¼l) of M.Â alba and a 300Â Î¼l linalool/caryophyllene combination at ratios of 10:1, 1:1, and 1:10 were first absorbed into plant absorbent material (Î¦â¼20Â mm) before being put into a closed glass box (1L) containing A.Â flavus spore and the mycelium (Î¦â¼5Â mm) in a Malt Extract Agar (uncovered plate). Mold testing was also carried out on brown rice with A.Â flavus spore suspension before being incubated at 25Â° C and 100% RH for 16 weeks. Quality tests e.g. texture, a sensorial evaluation (hedonic scale) of brown rice were also conducted. Results indicated that the vapor phase of M.Â alba at â¥ 300Â Î¼lÂ Lâ1 air could inhibit both spore germination and A.Â flavus mycelium. Antifungal activity of M.Â alba in air was strongly correlated with the linalool/caryophyllene combination at the ratio of 10:1 in 300Â Î¼lÂ Lâ1 air. In addition, M.Â alba vapor at 300Â Î¼lÂ Lâ1 air was found to extend the shelf-life of the brown rice by four times (16 weeks) in comparison with the control treated without essential oil (4 weeks). After being cooked, the hardness of brown rice with volatile essential oil was found to be reduced by one third (compared to the control brown rice). The hedonic value (overall liking) of cooked brown rice packed with M.Â alba vapor at 300Â Î¼l for 1 week and then stored for 16 weeks was a 7, rated as “like moderately”. Therefore, this study has demonstrated the good potential of M.Â alba vapor to control mold growth on the surface of brown rice.
Journal: Food Control - Volume 77, July 2017, Pages 150-157