titration of oxalic acid vs potassium permanganate
Báo cáo khoa học: Interaction of gymnemic acid with cyclodextrins analyzed by isothermal titration calorimetry, NMR and dynamic light scattering doc
Ngày tải lên :
16/03/2014, 14:20
... presence of
2.0 m
M a-CD, b-CD, and c-CD. (B) The concentration dependence
of c-CD on NMR spectra of 2.0 m
M GA. The ratios of c-CD to GA
are indicated.
Y. Izutani et al. Interaction of gymnemic acid ... School of Agriculture, Kyoto Prefectural University, Japan
2 Department of Applied Biology, Kyoto Institute of Technology, Japan
3 Faculty of Medicine, Tottori University, Yonago, Japan
Gymnemic acid ... bind-
ing of GA to the pocket of c-CD occurs in the
aqueous solution, accompanying dispersion of the
self-association of GA.
DLS analysis
In order to further analyze the aggregated property
of GA...
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ứng dụng chất kích kháng CuCl2 và Oxalic Acid
Ngày tải lên :
10/04/2013, 21:05
... 2.7: Hiệu quả kích kháng của oxalic acid lên tỉ lệ diện tích vết bệnh trên lá (%) ở các
thời điểm 40, 50 và 60 NSKS 42
Hình 2.8: Hiệu quả kích kháng của oxalic acid lên tỉ lệ bệnh thối cổ bông ... 2.13: Hiệu quả kích kháng của oxalic acid lên tỉ lệ diện tích vết bệnh trên lá (%) ở các
thời điểm 40, 50 và 60 NSKS 50
Hình 2.14: Hiệu quả kích kháng của oxalic acid lên tỉ lệ bệnh thối cổ bông ... 2001) và mô học (Huỳnh Minh Châu và ctv,2001).
6. Đặc tính oxalic acid và tác động của nó đối với cây trồng
Tên hóa học: OXALIC ACID
Công thửc hóa học: Thường tồn tại ở dạng ngm 2 phõn t...
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- 13
Tài liệu Báo cáo khoa học: Multi-targeted activity of maslinic acid as an antimalarial natural compound pdf
Ngày tải lên :
14/02/2014, 14:20
... dinitrobenzoic acid (10 mm
3,5-dinitrobenzoic acid in 0.4 m Tris ⁄ HCl, pH 8.0), 10 l Lof
parasite protein extract or 10 lL of PLA2 bee venom sup-
plied by the kit as positive control, and 5 lL of the ... mixing 100 l L of 100 l m
ZnSO
4
.H
2
O, 200 lL of 0.3 m Na
2
CO
3
pH 10, 10 lL of com-
pound (MA or EDTA as control) and 6 lL of Eriochrome
Black T (5 mgặmL
)1
in ethanol, pH 10). The pH of the Erio-
chrome ... the
processing of apicoplast protein leader sequence.
Inhibition of any of these activities could contribute to
MA interference in the maturation of the parasite.
Polypharmacology of MA
The observed...
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Tài liệu THE ROLES OF AMINO ACID CHELATES IN ANIMAL NUTRITION pdf
Ngày tải lên :
15/02/2014, 16:20
... Cagliero
6.
AN
ASSESSMENT OF
LONG
TERM
FEEDING OF
AMINO ACID CHELATES 106
Robert
B.
Jeppsen
SECTION 2
CATTLE
7. THE
USE
OF AMINO ACID CHELATES
TO
ENHANCE
THE IMMUNE SYSTEM 117
Robert
T.
Coffey
8.
THE
USE
OF AMINO ACID ... animals
is
coming
of age.
The
advantage of using
amino
acids to
chelate
essential
minerals
and
render
them
more
biologically
available
to
the
animal
offers
greater
possibilities
to
regulate
the
amount
of a ... ions
is
dependent
upon
numerous
factors,
including the levels of the elements ingested,
the
age
of the animal,
Ph
of the
intestinal
contents
and
environment, the
state
of the
animal
with respect to
deficiency or
adequacy
of the element,
and
the...
- 502
- 2.5K
- 1
Báo cáo khoa học: Identification of the structural determinant responsible for the phosphorylation of G-protein activated potassium channel 1 by cAMP-dependent protein kinase pdf
Ngày tải lên :
07/03/2014, 00:20
... phosphorylation of recombinant, truncated, GIRK1 by the catalytic subunit of PKA. In the lower panels, the mean values and
standard error of mean values of relative specific radioactivity of the different ... contribution of GIRK1 isoforms to
PKA-mediated effects on heterooligomeric channels,
with the aim of understanding in more detail this
important regulation concerning G-protein activation
of K
+
channels.
Experimental ... this distal
part is unique for GIRK1 among the Kir3.x isoforms.
Further truncations of the C-terminus revealed a 49
amino acid stretch (amino acids 362–411) that was the
most prominent target for...
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Báo cáo khoa học: Spatio-temporal distribution of fatty acid-binding protein 6 (fabp6) gene transcripts in the developing and adult zebrafish (Danio rerio) pptx
Ngày tải lên :
07/03/2014, 06:20
... uptake of fatty
acids across the plasma membrane and transport to
various subcellular organelles, (b) modulation of the
activity of enzymes involved in fatty acid metabolism,
(c) protection of enzymes ... membranes from the
detergent effects of excess fatty acids by sequestering
them, and (d) modulation of cell growth and differenti-
ation by transport of fatty acids to the nucleus where
they activate ... molecular mass of 14 406 Da and an isoelectric point
of 6.59. With the exception of some Fabp10s, which
have an isoelectric point of 8.8–9.0, all other FABPs
have isoelectric points of approximately...
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Báo cáo Y học: Molecular cloning and characterization of isomultiflorenol synthase, a new triterpene synthase from Luffa cylindrica, involved in biosynthesis of bryonolic acid ppt
Ngày tải lên :
08/03/2014, 23:20
... independent regulation of
these two genes and of the accumulation of bryonolic acid
and phytosterols. It is noteworthy that the changes in their
mRNA levels correlated with the accumulation of the
respective ... Nucleotide and amino -acid sequences
were analysed by Genetyx-Mac software (Software
Development, Tokyo, Japan). This clone was designated
LcIMS1.
Fig. 1. Pathways of bryonolic acid biosynthesis
in ... contents of bryonolic
acid and total sterols were calculated from the peak area of
their trimethylsilylated products relative to that of the
internal standard. Sterol content was the total content of
stigmasta-7,22-dien-3b-ol,...
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Báo cáo khoa học: Plant oxylipins: role of jasmonic acid during programmed cell death, defence and leaf senescence doc
Ngày tải lên :
16/03/2014, 02:20
... [34]. By
contrast, fractions of the unsaturated membrane fatty
acid a-linolenic acid and a-linoleic acid are converted
randomly and nonenzymatically to a variety of prod-
ucts when etiolated ... non-enzy-
matic
1
O
2
-mediated peroxidation of polyunsaturated
fatty acids forms part of the EXECUTER1-dependent
stress response program in the flu mutant of Arabidop-
sis thaliana. Plant J 54, 236–248.
35 ... in
many of these defence responses is jasmonic acid. It is the aim of this mini-
review to summarize recent findings that highlight the role of jasmonic acid
during programmed cell death, plant defence...
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Báo cáo khoa học: Mutational analyses of human eIF5A-1 – identification of amino acid residues critical for eIF5A activity and hypusine modification doc
Ngày tải lên :
16/03/2014, 06:20
... stopped by addition of
0.5 mL of ice-cold stopping solutions (0.3 mgặmL
)1
of thymi-
dine for DNA, 0.3 mgặmL
)1
of uracil for RNA, and
0.3 mgặmL
)1
of cycloheximide plus 1 mgặmL
)1
of leucine for
protein), ... to 30% of the initial rate of UBHY-R,
whereas the rates of synthesis of DNA and RNA were
70% and 60% of the initial values, respectively. These
data suggest that the primary effect of eIF5A ... Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
2 Department of Biological Sciences, School of Pharmaceutical Sciences, Sa˜o...
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Báo cáo khoa học: cAMP increases mitochondrial cholesterol transport through the induction of arachidonic acid release inside this organelle in Leydig cells pdf
Ngày tải lên :
16/03/2014, 12:20
... regu-
lation of cholesterol transport by arachidonic acid and the release of
arachidonic acid in specialized compartment of the cells could offer novel
means for understanding the regulation of steroid ... AA-CoA
Control
C
)nietorpg
m/gn
(enoretsegorP
b
bb
0.70
0.20
0.10
0.00
)nietorpgm/gn(enoretsegorP
0.85
Arachidonic
acid
Arachidic
acid
Oleic
acid
A
Control
+ NDGA
+ CHX
None
22(R)OH-
cholesterol
Fig. 3. Effect of fatty acids, CoA derivatives of fatty acids, BPB,
NDGA and malonyl-CoA ... Podesta
´
Department of Biochemistry, School of Medicine, University of Buenos Aires, Argentina
Arachidonic acid (AA) is a fatty acid with 20 carbons
and four cis double bonds that are the source of its
flexibility...
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Báo cáo khoa học: Mechanism of mild acid hydrolysis of galactan polysaccharides with highly ordered disaccharide repeats leading to a complete series of exclusively odd-numbered oligosaccharides doc
Ngày tải lên :
23/03/2014, 04:21
... mechanism of acid hydrolysis of the
3,6-anGal-containing galactans.
Results and Discussion
Identification of a complete series of
odd-numbered oligosaccharides resulting from
mild acid hydrolysis of ... [21].
Hydrolysis of i-carrageenan was extended to 3 h. Small-
scale (10 mg) hydrolysis of j-carrageenan was also carried
out with various organic acids, including TFA, oxalic
acid, maleic acid, phthalic acid, ... fumaric acid, citric acid,
formic acid, succinic acid, and acetic acid, at 60 °C for
1.5 h. Reductive hydrolysis of j-carrageenan and agarose
was carried out on a large scale with addition of 0.2...
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Báo cáo khoa học: Inhibition of aryl acid adenylation domains involved in bacterial siderophore synthesis ppt
Ngày tải lên :
23/03/2014, 11:20
... option
of Microcal
tm
origin
tm
5.0 software (Microcal Software
Inc., Northampton, MA, USA). The inhibitory effect of the
six acyl adenylate analogues on DhbE was tested using
12.5 lm of inhibitor ... pathogenicity control was the development of the
SAL-AMS compound for aryl acid A domain inhibi-
tion of SAL-capped siderophore producing pathogens
[8]. Inhibition of aryl acid A domains bears the
advantage ... to acidic conditions and could be obtained
only in low yield.
Extension of this procedure for preparation of the
dihydroxybenzoyl derivative 13 starting from the succini-
mide derivative of dihydroxybenzoic...
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Báo cáo khoa học: Weak organic acid stress inhibits aromatic amino acid uptake by yeast, causing a strong influence of amino acid auxotrophies on the phenotypes of membrane transporter mutants ppt
Ngày tải lên :
23/03/2014, 21:20
... chain
(C
3)8
) carboxylic acids of reasonable water solubility [5,6].
A similar spectum of acids is also capable of mediating the
War1p-dependent induction of Pdr12p [3,6]. These are acids
that cannot ... College London, UK
The ability of yeasts to grow in the presence of weak organic
acid preservatives is an important cause of food spoilage.
Many of the determinants of acetate resistance in Sac-
charomyces ... Defects in several of the enzymes of aromatic
amino acid biosynthesis therefore hypersensitize yeast to
weak organic acid stress.
We also investigated the growth of this same series of
strains after...
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