scholarly journals Effects of holding position and transport vibration on respiration rate, chemical components and quality stability of broccoli (Brassica oleracea italica)

2007 ◽  
Vol 33 (1) ◽  
pp. 3-8
Author(s):  
Hironobu IKEDA ◽  
Kana OZAKI ◽  
Kazuna MIYAGI ◽  
Toshiyuki IBARAKI ◽  
Takayuki KOJIMA ◽  
...  
Keyword(s):  
Brassica Oleracea ◽  
Respiration Rate ◽  
Chemical Components ◽  
Quality Stability

scholarly journals Effects of Harvest Season on Respiration Rate, Chemical Composition and Quality Stability of Broccoli (Brassica oleracea L. italica)

2008 ◽  
Vol 34 (1) ◽  
pp. 3-9
Author(s):  
Hironobu IKEDA ◽  
Tomoko FUJISE ◽  
Kazuna MIYAGI ◽  
Toshiyuki IBARAKI ◽  
Hideaki OHTA
Keyword(s):  
Chemical Composition ◽  
Brassica Oleracea ◽  
Respiration Rate ◽  
Quality Stability ◽  
Brassica Oleracea L

scholarly journals Influence of transport vibration on respiration rates and chemical components of broccoli (Brassica oleracea var. italica)

2001 ◽  
Vol 27 (5) ◽  
pp. 263-268
Author(s):  
Hironobu IKEDA ◽  
Toshinao ISHII ◽  
Toshiyuki IBARAKI ◽  
Takayuki KOJIMA ◽  
Hideaki OHTA
Keyword(s):  
Brassica Oleracea ◽  
Chemical Components ◽  
Respiration Rates

scholarly journals Cytokinins Affect Respiration, Ethylene Production, and Chlorophyll Retention of Packaged Broccoli Florets

HortScience ◽  
1990 ◽  
Vol 25 (1) ◽  
pp. 88-90 ◽  
Author(s):  
James W. Rushing
Keyword(s):  
Shelf Life ◽  
Brassica Oleracea ◽  
Chlorophyll Content ◽  
Respiration Rate ◽  
Ethylene Production ◽  
Total Chlorophyll ◽  
Total Chlorophyll Content ◽  
Polyethylene Bags ◽  
And Storage ◽  
Chlorophyll Retention

Broccoli (Brassica oleracea L. var. italica `Citation') florets were treated postharvest with either benzyladenine or trans-zeatin at either 10 or 50 ppm before packaging in perforated polyethylene bags and storage at 16C. The most pronounced effects were observed with benzyladenine at 50 ppm. Compared to controls, respiration rate was reduced 50% and ethylene production increased 40% throughout the first 4 days of storage. Total chlorophyll content had dropped 60% in controls, but was unchanged in cytokinin-treated florets, which had a 90% longer shelf life than controls. These effects depended on the amount of cytokinin applied and were of greater magnitude with benzyladenine than with zeatin.

Microscopic versus process parameters in heavy-oil upgrading

1992 ◽  
Vol 50 (1) ◽  
pp. 366-367
Author(s):  
V.A. Munoz ◽  
R.J. Mikula ◽  
C. Payette ◽  
W.W. Lam
Keyword(s):  
Molecular Weight ◽  
Liquid Fuels ◽  
Chemical Components ◽  
Heavy Oils ◽  
Synthetic Fuels ◽  
High Hydrogen ◽  
Optical Texture ◽  
Polar Groups ◽  
Anisotropic Character ◽  
Planar Molecules

The transformation of high molecular weight components present in heavy oils into useable liquid fuels requires their decomposition by means of a variety of processes. The low molecular weight species produced recombine under controlled conditions to generate synthetic fuels. However, an important fraction undergo further recombination into higher molecular weight components, leading to the formation of coke. The optical texture of the coke can be related to its originating components. Those with high sulfur and oxygen content tend to produce cokes with small optical texture or fine mosaic, whereas compounds with relatively high hydrogen content are likely to produce large optical texture or domains. In addition, the structure of the parent chemical components, planar or nonplanar, determines the isotropic or anisotropic character of the coke. Planar molecules have a tendency to align in an approximately parallel arrangement to initiate the formation of the nematic mesophase leading to the formation of anisotropic coke. Nonplanar highly alkylated compounds and/or those rich in polar groups form isotropic coke. The aliphatic branches produce steric hindrance to alignment, whereas the polar groups participate in cross-linking reactions.

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