語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Effect of 1-methylcyclopropene on fl...
~
MacLean, Dan D.
FindBook
Google Book
Amazon
博客來
Effect of 1-methylcyclopropene on flavonoid and antioxidant metabolism in pome fruits.
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
Effect of 1-methylcyclopropene on flavonoid and antioxidant metabolism in pome fruits./
作者:
MacLean, Dan D.
面頁冊數:
167 p.
附註:
Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1487.
Contained By:
Dissertation Abstracts International68-03B.
標題:
Agriculture, Horticulture. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR24573
ISBN:
9780494245736
Effect of 1-methylcyclopropene on flavonoid and antioxidant metabolism in pome fruits.
MacLean, Dan D.
Effect of 1-methylcyclopropene on flavonoid and antioxidant metabolism in pome fruits.
- 167 p.
Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1487.
Thesis (Ph.D.)--University of Guelph (Canada), 2007.
There has been a growing interest in understanding the role of antioxidants and phenolics in the human diet. Pome fruits are considered one of the greatest sources of dietary phenolics, thus it is important to understand how postharvest practices affect the phytochemical content of these fruits. Recently, the ethylene antagonist 1-methylcyclopropene (1-MCP) has been registered for use on apples (malus x domestica Borkh.), with similar registration being sought for pears (Pyrus communis L.). Because the phenylpropanoid pathway is regulated by ethylene, there is concern that a postharvest 1-MCP treatment may adversely affect the phytochemical content of harvested pome fruit.
ISBN: 9780494245736Subjects--Topical Terms:
1017832
Agriculture, Horticulture.
Effect of 1-methylcyclopropene on flavonoid and antioxidant metabolism in pome fruits.
LDR
:03366nam 2200277 a 45
001
967776
005
20110915
008
110915s2007 eng d
020
$a
9780494245736
035
$a
(UMI)AAINR24573
035
$a
AAINR24573
040
$a
UMI
$c
UMI
100
1
$a
MacLean, Dan D.
$3
1291648
245
1 0
$a
Effect of 1-methylcyclopropene on flavonoid and antioxidant metabolism in pome fruits.
300
$a
167 p.
500
$a
Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1487.
502
$a
Thesis (Ph.D.)--University of Guelph (Canada), 2007.
520
$a
There has been a growing interest in understanding the role of antioxidants and phenolics in the human diet. Pome fruits are considered one of the greatest sources of dietary phenolics, thus it is important to understand how postharvest practices affect the phytochemical content of these fruits. Recently, the ethylene antagonist 1-methylcyclopropene (1-MCP) has been registered for use on apples (malus x domestica Borkh.), with similar registration being sought for pears (Pyrus communis L.). Because the phenylpropanoid pathway is regulated by ethylene, there is concern that a postharvest 1-MCP treatment may adversely affect the phytochemical content of harvested pome fruit.
520
$a
The total antioxidant capacity (TAC) of three apple cultivars under various 1-MCP, harvest maturity, storage, and ripening regimes, was determined using a modified total oxyradical scavenging capacity assay. In general, it was found that 1-MCP treatment resulted in significantly higher TAC in 'Delicious' (3%), and 'McIntosh' red (15%) and green (8%) tissues when compared with untreated fruit. Regardless of treatment, the TAC of 'Delicious' was 2-fold greater than 'Empire', while 'McIntosh' red and green tissues were intermediate. A subsequent study investigated the impact of 1-MCP on the postharvest synthesis or retention of phenolic compounds in 'Delicious' apple using HPLC-DAD analysis. 1-MCP treatment appears to have inhibited the catabolism of flavonoids, while concurrently inhibiting the biosynthesis of chlorogenic acid in early-harvested fruit. The effect of 1-MCP on the transcription of two key flavonoid biosynthetic (phenylalanine ammonia-lyase, PAL; and chalcone synthase, CHS), flavonoid transport (glutathione S-transferase, GST), and ethylene perception (ethylene response sensor 1, ERS1) genes was determined. 1-MCP treatment inhibited expression of PAL, CHS and ERS1 transcripts, and simultaneously inhibited ethylene production and chlorogenic acid biosynthesis. In non-treated fruit, an increase in PAL expression with the concomitant post-storage decrease of CHS expression and postharvest decrease of GST expression suggests a diversion of carbon from flavonoid compounds into chlorogenic acid, and perhaps an increased susceptibility of the fruit to the storage disorder superficial scald. These results suggest that 1-MCP treatment does not have a deleterious effect on the TAC or flavonoid concentration of pome fruit, but will result in lower chlorogenic acid concentration in early-harvested fruit.
590
$a
School code: 0081.
650
4
$a
Agriculture, Horticulture.
$3
1017832
650
4
$a
Agriculture, Plant Culture.
$3
1018669
650
4
$a
Biology, Plant Physiology.
$3
1017865
690
$a
0471
690
$a
0479
690
$a
0817
710
2 0
$a
University of Guelph (Canada).
$3
1018650
773
0
$t
Dissertation Abstracts International
$g
68-03B.
790
$a
0081
791
$a
Ph.D.
792
$a
2007
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR24573
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9126430
電子資源
11.線上閱覽_V
電子書
EB W9126430
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入