Involvement of peroxidase in enzymatic browning
Involvement of peroxidase in enzymatic browning
... an
effective involvement of pear POD in enzymatic browning.
Keywords: Enzymatic browning; pear; peroxidase; polyphenol oxidase
INTRODUCTION
Browning of damaged tissues of fruits and vegetables
during ... affinity
of pear PPO for its natural substrates (Gauillard and
Richard-Forget, 1997), are in agreement with an effec-
tive involvement of pear POD in enzymatic...
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... lines indicate intron 6 of 75 bp in fragments
B and C, 3¢ portion of 35 bp in intron 5 in fragments C and D, and
3¢ portion of 25 bp in intron 6 in fragments F and I. The number at
the right of ... results in no generation of protein isoforms.
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... infection.
ArgII is involved in the biosynthesis of natural poly-
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conversion of l-arginine into l-ornithine [16]. The lat-
ter is in turn used by ... iodide
(PI) staining of apoptotic cells was quantified in VSV-
infected Jurkat T cells in the absence or presence of
spermine. As shown in Fig. 7, the presence of spermine
d...
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... determination of the amino-terminal amino acid
sequence of purified protein was attempted, but no infor-
mation was obtained, probably due to the protein modifi-
cation. Therefore, the purified protein ... These
results indicate that the cDNA obtained covered the entire
coding region.
Involvement of GTP in the regulation of TGase function
In the deduced primary sequence, we found a...
Advances in understanding of enzymatic browning in harvested
... re-
sulting from PPO activity, then accelerate anthocyanidin
degradation, resulting in enzymatic browning (Fig. 1).
With an increasing research effort on litchi, our under-
standing of the enzymatic browning ... thylcatechol in the
presence of H
2
O
2
and, thereby, form brown polyme ric
pigments. This finding further supports the case for in-
volvement of POD in enzymatic...
Antisense expression of polyphenol oxidase genes inhibits enzymatic browning in potato tubers
... polyphenolic
pigmentsformed by auto-oxidation of PPO-derived quinones.
A large number of interacting genetic and environmental
factors
influence
enzymatic browning in potatoes including
tuber dry matter as wellas ... resulting index ranges from 0 to 50. Indices
from tubers of 50 lines were determined after in
vitro
propaga
tionand plantinginfieldtrials in Metslawier,northernHo...
Control of enzymatic browning in apple with ascorbic aci
... 1989-JOURNAL OF FOOD SCIENCE-999
CONTROL OF ENZYMATIC BROWNING IN APPLE. . .
Table 5-Inhibition of enzymatic browning in Granny Smith juice by cyclodaxtrins (CD) and combinations of CD’S with ... against browning in Red Deli-
cious and Winesap plugs but induced browning in samples
stored 6 or more hours (data not shown). As with CINN, in-
duced browning by...
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... MINIREVIEW
Synchronization of Ca
2+
oscillations: involvement of ATP
release in astrocytes
Schuichi Koizumi
Department of Pharmacology, Faculty of Medicine, University of Yamanashi, Japan
Introduction
Glia, ... astrocytic
Ca
2+
transients are accentuated in pathological con-
ditions, suggesting the involvement of astrocytic Ca
2+
transients in brain disorders, including...
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... curves. (C) Bars indicate
the effects of preincubation on initial rates (5 min) of thrombin generation (n = 3–5). (D) Human platelets in fibrin-depleted human plasma
were preincubated with inhibitors ... examined
using two structurally distinct inhibitors, wortmannin
and LY294002 [21]. In the presence of ADP ⁄ P2Y
12
activity, wortmannin or LY294002 suppressed the
thrombin-induced Ca...
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... presence of kringle 5 in
the structure of the protease; miniplasmin (des-kringle 1-4 plasmin) is as
sensitive to fatty acids as plasmin, whereas the activity of microplasmin
(des-kringle 1-5 plasmin) ... 1-4 plasmin) con-
tains the kringle 5 and the catalytic domain of plas-
min, whereas microplasmin (des-kringle 1-5 plasmin) is
composed of the catalytic domain only [11]. At a sat...