| 24小時熱門版塊排行榜 |
| 5 | 1/1 | 返回列表 |
| 查看: 895 | 回復: 4 | |||
| 當前只顯示滿足指定條件的回帖,點擊這里查看本話題的所有回帖 | |||
[交流]
【求助】英譯漢 能翻譯多少就多少 謝謝
|
|||
|
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). |
» 搶金幣啦!回帖就可以得到:
+5/780
+1/462
+1/281
+1/163
+2/160
+1/84
+1/82
+1/81
+1/77
+1/52
+1/49
+1/31
+1/27
+1/19
+1/19
+1/18
+1/16
+1/7
+1/3
+1/1
| 如上文第6.3節(jié)所講,1 – MCP處理蘋果、哈密瓜,以及其他轉變期水果,在基因轉錄和翻譯水平強烈抑制揮發(fā)性芳香類化合物特別是酯類的合成(Defilippi等,2005年,EL- Sharkawy等,2005)。kondo等人(2005年)發(fā)現,1 - MCP的處理過的'美味'和 '金冠'蘋果產生揮發(fā)性醇類和酯類仍然非常低,在20℃能保存長達28天,低劑量(0.2μL的L - 1)1 - MCP處理'帕卡姆的勝利'梨時,醋酸酯合成減少,在20℃經過RA存儲2個月后五天成熟,但4至6個月的儲存后酯生物合成能力恢復,一個消費者委員會首選1 - MCP處理未經處理的水果,儲存的時間越長(Moya-LeÌn et al., 2006)。非常低劑量(50 nLL - 1)的1 - MCP處理的'會議'梨得到類似的結果(Rizzolo等,2005年)。最值得注意的是,最佳的感官品質是經過長時間存放和提供丁醇、乙酸乙酯的基地所產出( Mattheis等 ,2005年)。評價1 - MCP和CA對'嘎拉'蘋果經過1℃存放長達28周加在20℃存放一周生產各類芳香揮發(fā)物的影響,兩者相結合或分開。不管有沒有1 - MCP處理 ,在CA存儲的水果,酯合成持續(xù)下降,而蘋果用1 – MCP處理并在空氣中存儲20-28周,都開始產生各種型號各種級別的揮發(fā)物 。 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 22408 344分 求調劑 一志愿 華電計算機技術 +4 | solanXXX 2026-03-20 | 4/200 |
|
|---|---|---|---|---|
|
[考研] 南京大學化學376求調劑 +3 | hisfailed 2026-03-19 | 6/300 |
|
|
[考研] 【考研調劑】化學專業(yè) 281分,一志愿四川大學,誠心求調劑 +7 | 吃吃吃才有意義 2026-03-19 | 7/350 |
|
|
[考研] 藥學383 求調劑 +3 | 藥學chy 2026-03-15 | 5/250 |
|
|
[考研] 求調劑一志愿南京航空航天大學289分 +3 | @taotao 2026-03-19 | 3/150 |
|
|
[考研] 一志愿武理材料工程348求調劑 +3 |  ̄^ ̄゜汗 2026-03-19 | 4/200 |
|
|
[考研] 求調劑 +3 | @taotao 2026-03-20 | 3/150 |
|
|
[考研] 0703化學調劑 +10 | 妮妮ninicgb 2026-03-15 | 14/700 |
|
|
[考研] 307求調劑 +9 | 冷笙123 2026-03-17 | 9/450 |
|
|
[考研] 生物學調劑招人!! +3 | 山海天嵐 2026-03-17 | 4/200 |
|
|
[考研] 0703化學 305求調劑 +4 | FY_yy 2026-03-14 | 4/200 |
|
|
[考研] 材料專業(yè)求調劑 +5 | hanamiko 2026-03-18 | 5/250 |
|
|
[考研] 268求調劑 +6 | 簡單點0 2026-03-17 | 6/300 |
|
|
[基金申請] 被我言中:新模板不強調格式了,假專家開始管格式了 +4 | beefly 2026-03-14 | 4/200 |
|
|
[碩博家園] 湖北工業(yè)大學 生命科學與健康學院-課題組招收2026級食品/生物方向碩士 +3 | 1喜春8 2026-03-17 | 5/250 |
|
|
[考研] 一志愿蘇州大學材料工程(085601)專碩有科研經歷三項國獎兩個實用型專利一項省級立項 +6 | 大火山小火山 2026-03-16 | 8/400 |
|
|
[考研] 一志愿,福州大學材料專碩339分求調劑 +3 | 木子momo青爭 2026-03-15 | 3/150 |
|
|
[考研]
|
zhouzhen654 2026-03-16 | 3/150 |
|
|
[考研] 321求調劑 +5 | 大米飯! 2026-03-15 | 5/250 |
|
|
[考研] 289求調劑 +4 | 這么名字咋樣 2026-03-14 | 6/300 |
|