Chemical composition of apoplastic transport barriers in relation to radial hydraulic conductivity of corn roots (Zea mays L.)

Planta ◽  
2000 ◽  
Vol 210 (2) ◽  
pp. 302-311 ◽  
Author(s):  
Hilde Monika Zimmermann ◽  
Klaus Hartmann ◽  
Lukas Schreiber ◽  
Ernst Steudle
Keyword(s):  
Zea Mays ◽  
Chemical Composition ◽  
Hydraulic Conductivity ◽  
Zea Mays L ◽  
Corn Roots ◽  
Transport Barriers

Chemical composition, bioactive compounds, antioxidant capacity and stability of floral maize (Zea mays L.) pollen

2014 ◽  
Vol 10 ◽  
pp. 65-74 ◽  
Author(s):  
Slađana Žilić ◽  
Jelena Vančetović ◽  
Marijana Janković ◽  
Vuk Maksimović
Keyword(s):  
Zea Mays ◽  
Chemical Composition ◽  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Zea Mays L

scholarly journals PERBEDAAN KARAKTERISTIK KIMIA DAN DAYA CERNA PATI TEPUNG JAGUNG DAN TEPUNG KECAMBAH JAGUNG (Zea mays L.)

2018 ◽  
Vol 7 (1) ◽  
pp. 43
Author(s):  
Willem Kurniawan Lombu ◽  
Ni Wayan Wisaniyasa ◽  
AAI. Sri Wiadnyani
Keyword(s):  
Zea Mays ◽  
Chemical Composition ◽  
Moisture Content ◽  
Zea Mays L ◽  
Starch Content ◽  
Fat Content ◽  
Ash Content ◽  
Starch Digestibility ◽  
Corn Flour ◽  
The Difference

This study aims to determine the difference of characteristic and starch digestibility of germinated and ungerminated flour. This study used randomized complete design (RCD) three repeated. The corn germinated for 36 hours. Corn germinated flour and ungerminated flour were evaluated directly of the chemical composition of the flour content, moisture content, ash content, protein, fat, carbohydrates, fiber, starch content and starch digestibility. The results showed the corn germinated flour has increased of moisture content from 9.66% into 10.38%, increased of protein into 7.22% into 8.45%, increased of fiber content from 2.28% into 2.79% and increased of starch digestibility from 57.04% into 62.43%. While were the decreased fat content from 5.17% into 4.76%, decreased of carbohydrate from 75.41% into 73.89% and decreased of starch content from 76.10% into 69.40%. The treatmented has no effect for the flour content decreased from 41.40% into 40.36% and ash content decreased from 2.52% into 2.51%. Germinated increased starch digestibility and changed the character of corn flour.

scholarly journals Asparagine synthetase in Zea mays

1984 ◽  
Vol 62 (1) ◽  
pp. 68-73 ◽  
Author(s):  
Ann Oaks ◽  
D. W. Ross
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Asparagine Synthetase ◽  
The Other ◽  
Heat Inactivation ◽  
Developing Seeds ◽  
Corn Roots ◽  
Nitrogen Donor ◽  
Glycine Max L ◽  
Specific Activities

Properties of asparagine synthetase from various tissues of Zea mays L. (embryo and endosperm from developing seeds; scutella and roots from young seedlings) and from cotyledons of Glycine max L. have been compared. The specific activities obtained with extracts from soybean cotyledons were 10–30-fold higher than activities obtained from any of the maize tissues. The apparent Km values (millimolar) were about 0.5 for glutamine and about 2.0 for [Formula: see text] for the enzymes from the various corn tissues and 0.18 and 3.0, respectively, for soybean cotyledons. The Vmax values were about twofold higher for glutamine compared with [Formula: see text] for corn embryos, endosperms, and scutella and for soybean cotyledons. With corn roots, on the other hand, a slightly higher Vmax was obtained when [Formula: see text] was the nitrogen donor. With the exception of corn root enzyme, glutamine protected asparagine synthetase from heat inactivation. [Formula: see text] had no protective effect on the enzyme from any of the tissues examined. The results indicate that the enzyme from corn (any tissue) is not as stringent in its requirement for glutamine as is the enzyme from soybean cotyledons and that the root enzyme responds to [Formula: see text] and glutamine in a unique fashion. The enzyme obtained from developing seeds (embryo or endosperm) was inhibited by asparagine. All the corn enzymes were inhibited by ADP to a greater extent than by AMP or ATP. Enzyme from the scutella or soybean cotyledons but not from the root or the developing embryo was inhibited by the glutamine analogue albizziin. Thus there appear to be important differences in the properties of asparagine synthetases extracted from various tissues of corn and soybean cotyledons.

scholarly journals Climate, nitrogen and grass. 4. The influence of age on chemical composition and in vitro digestibility of maize (Zea mays L.) and tall fescue (Festuca arundinacea Schreb.).

1971 ◽  
Vol 19 (4) ◽  
pp. 264-272 ◽  
Author(s):  
B. Deinum ◽  
J.G.P. Dirven
Keyword(s):  
Cell Wall ◽  
Zea Mays ◽  
Chemical Composition ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Zea Mays L ◽  
In Vitro Digestibility ◽  
Higher Temperature ◽  
Effect Of Age

In a field experiment with maize it was found that in vitro digestibility of leaves decreased somewhat during undisturbed growth, whereas digestibility of stems decreased appreciably. This decrease in leaf digestibility was caused by a lower digestibility of later-developed leaves and by a slight decrease in digestibility during ageing of each individual leaf. In a pot experiment with tall fescue grown at 15/10, 20/15 and 25/20 deg C, it was found that a higher temperature resulted in higher concentrations of cell-wall constituents and lower digestibility, whereas during ageing the percentage of cell-wall constituents remained constant or even decreased, digestibility decreasing slightly. Results suggested that in a constant climate the effect of age on digestibility would be small, and that the great effect of age on forage quality in spring is mainly due to rising temperature and stem formation. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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