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poyoro

木虫 (文坛精英)


[交流] 【求助】英译汉 能翻译多少就多少 谢谢

As mentioned in Section 6.3, 1-MCP treatment of apples, cantaloupes, and
other climacteric fruits strongly suppresses biosynthesis of aroma volatiles, particularly
esters, at the level of gene transcription and translation (Defilippi et al.,
2005b; El-Sharkawy et al., 2005). Kondo et al. (2005) found that production of
volatile alcohols and esters remained very low in 1-MCP-treated ‘Delicious’ and
‘Golden Delicious’ apples stored for up to 28 days at 20 °C. A low-dose 1-MCP
treatment (0.2 μL L–1) reduced synthesis of acetate esters in ‘Packham’s Triumph’
pears ripened five days at 20 °C after two months of RA storage, but the ester
biosynthetic capacity was recovered after four to six months of storage, and a
consumer panel preferred 1-MCP-treated over untreated fruit stored for the longer
durations (Moya-LeÌn et al., 2006). Similar results were obtained with multiple
very low-dose 1-MCP treatments (50 nL L–1) of ‘Conference’ pears (Rizzolo et al.,
2005). Most notably, optimal sensory quality was reached after longer storage
times and production of butanol and ethyl butanoate were suppressed. Mattheis et
al. (2005) evaluated the effects of both 1-MCP and CA, in combination or
separately, on the production of various classes of aroma volatiles by ‘Gala’ apples
after up to 28 weeks in 1 °C storage plus one week at 20 °C. With or without 1-MCP
treatment, ester synthesis declined continuously in CA-stored fruit, whereas apples
treated with 1-MCP and stored in air began to produce all types of volatiles after
20–28 weeks.

Exposure to ethylene for one week at 20 °C after storage for 12 or 28
weeks stimulated production of mainly esters and alcohols in both CA-stored and
1-MCP treated fruit, but did not increase the levels of aldehydes or acetic acid.
Treatment of apples and pears with 1-MCP also inhibited production of the
sesquiterpene α-farnesene during cold storage by blocking expression of the α-
farnesene synthase gene AFS1 (apple) or PcAFS1 (pear) (Pechous et al., 2005;
Gapper et al., 2006).
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winzhouyun

铜虫 (职业作家)


等我哈,占个座
2楼2011-03-04 01:13:48
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winzhouyun

铜虫 (职业作家)


poyoro(金币+50): :tiger28: 2011-03-04 21:49:58
poyoro(金币+50): you deserved it 2011-03-04 21:51:17
如上文第6.3节所讲,1 – MCP处理苹果、哈密瓜,以及其他转变期水果,在基因转录和翻译水平强烈抑制挥发性芳香类化合物特别是酯类的合成(Defilippi等,2005年,EL- Sharkawy等,2005)。kondo等人(2005年)发现,1 - MCP的处理过的'美味'和 '金冠'苹果产生挥发性醇类和酯类仍然非常低,在20℃能保存长达28天,低剂量(0.2μL的L - 1)1 - MCP处理'帕卡姆的胜利'梨时,醋酸酯合成减少,在20℃经过RA存储2个月后五天成熟,但4至6个月的储存后酯生物合成能力恢复,一个消费者委员会首选1 - MCP处理未经处理的水果,储存的时间越长(Moya-LeÌn et al., 2006)。非常低剂量(50 nLL - 1)的1 - MCP处理的'会议'梨得到类似的结果(Rizzolo等,2005年)。最值得注意的是,最佳的感官品质是经过长时间存放和提供丁醇、乙酸乙酯的基地所产出( Mattheis等 ,2005年)。评价1 - MCP和CA对'嘎拉'苹果经过1℃存放长达28周加在20℃存放一周生产各类芳香挥发物的影响,两者相结合或分开。不管有没有1 - MCP处理 ,在CA存储的水果,酯合成持续下降,而苹果用1 – MCP处理并在空气中存储20-28周,都开始产生各种型号各种级别的挥发物 。
3楼2011-03-04 01:50:49
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winzhouyun

铜虫 (职业作家)


CA存储和1 - MCP处理的果实在20℃储存12或28后暴露在乙烯下一周,刺激的主要是酯类和醇类产生,但并不会增加乙醛或乙酸醛水平。1 - MCP处理苹果和梨在冷藏中阻断了α-法尼烯合成酶基因AFS1(苹果)或PcAFS1(梨)的表达而抑制了倍半萜烯α-法尼烯的产生。(Pechous等,2005年;Gapper等,2006)。
4楼2011-03-04 01:59:25
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2011-03-04 07:56  
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