U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication Year 1997 Remove constraint Publication Year: 1997 Subject chitosan Remove constraint Subject: chitosan Subject term chitosan Remove constraint Subject term: chitosan
Start Over

Search

14  Search Results

1 - 14 of 14
Number of results to display per page

Search Results

1. Accelerating Effect of Chitosan Intake on Urinary Calcium Excretion by Rats

Author:
Masahiro Wada; Yoshikazu Nishimura; Yoshito Watanabe; Toshichika Takita; Satoshi Innami
Source:
Bioscience, biotechnology, and biochemistry 1997 v.61 no.7 pp. 1206-1208
ISSN:
1347-6947
Subject:
biotechnology; calcium; cellulose; chitosan; diet; excretion; metabolism
Abstract:
... The effect of chitosan on calcium (⁴⁷Ca) metabolism was investigated in rats. The whole-body retention of ⁴⁷Ca by rats fed on a 5% chitosan diet was significantly decreased when compared with that of rats fed on a cellulose diet, but showed no significant difference from that of rats fed on a fiber-free diet. Although there was no significant difference in the fecal excretion of ⁴⁷Ca between the c ...
DOI:
10.1271/bbb.61.1206

2. Bioactive coating for harvested commodities

Author:
El Ghaouth, A.; Wilson, C.L.
Source:
United States Department of Agriculture patents 1997 pp. -
Subject:
plant products; food processing; food contamination; yeasts; chitosan; ripening; postharvest diseases; patents; USDA; antifungal properties; United States
Abstract:
... A coating for harvested agricultural commodities which delays ripening and controls decay is described. The coating comprises a modified chitosan matrix containing a yeast antagonistic to postharvest pathogens. The modified chitosan may be carboxymethylchitosan or glycolchitosan. The combined fungicidal activities of the modified chitosan and the antagonistic yeast make this formulation an attract ...
Handle:
10113/5462

3. Conformational Behavior of Chitosan in the Acetate Salt: An X-Ray Study

Author:
Atsushi Yamamoto; Junpei Kawada; Toshifumi Yui; Kozo Ogawa
Source:
Bioscience, biotechnology, and biochemistry 1997 v.61 no.7 pp. 1230-1232
ISSN:
1347-6947
Subject:
X-radiation; acetates; acetic acid; biotechnology; chitin; chitosan; crabs; solvents
Abstract:
... A well-defined X-ray fiber pattern of chitosan acetate was obtained by immersing a tendon chitosan, prepared from a crab tendon chitin by a solid-state N-deacetylation, in an aqueous acetic acid-isopropanol solution at 110°C. This pattern was very similar to that of chitosan salts with some inorganic acids, such as HF, HCl, and H₂SO₄, in which chitosan chains form an 8/5 helix, indicating that chi ...
DOI:
10.1271/bbb.61.1230

4. Control of phytophthora root and crown rot of bell pepper with composts and soil amendments in the greenhouse

Author:
Kim, K.D.; Nemec, S.; Musson, G.
Source:
Applied soil ecology 1997 v.5 no.2 pp. 169-179
ISSN:
0929-1393
Subject:
soil fungi; Phytophthora capsici; soil bacteria; application rate; Capsicum annuum; cultural control; composts; chitosan; fungal diseases of plants; citrus pulp; dry matter accumulation; biological activity in soil; root rot; roots; shoots

5. Defense response in slash pine: chitosan treatment alters the abundance of specific mRNAs

Author:
Mason, M.E.; Davis, J.M.
Source:
Molecular plant-microbe interactions 1997 v.10 no.1 pp. 135-137
ISSN:
0894-0282
Subject:
messenger RNA; complementary DNA; chitosan; chitinase; amino acid sequences; gene expression; Pinus elliottii; nucleotide sequences; oxygenases; defense mechanisms
Abstract:
... We used differential display to identify chitosan responsive cDNAs in slash pine cell cultures. Two clones that showed increased mRNA abundance had sequence similarity to genes with roles in major plant defense responses, clone 18 to cinnamic acid 4-hydroxylase, and clone 30 to chitinase. ...
DOI:
10.1094/MPMI.1997.10.1.135
PubMed:
9002276

6. Dehydrated and extruded chitosan-produced secondary poultry nutrients (SPN) as broiler feedstuffs

Author:
Lyons, J.J.; Vandepopuliere, J.M.
Source:
Journal of applied poultry research 1997 v.6 no.1 pp. 100-106
ISSN:
1056-6171
Subject:
broiler chickens; feed conversion; chitosan; wastewater treatment; waste utilization; liveweight gain; amino acids; feed formulation; fluidized beds
DOI:
10.1093/japr/6.1.100

7. Differential induction of lipoxygenase isoforms in wheat upon treatment with rust fungus elicitor, chitin oligosaccharides, chitosan, and methyl jasmonate

Author:
Bohland, C.; Balkenhohl, T.; Loers, G.; Feussner, I.; Grambow, H.J.
Source:
Plant physiology 1997 v.114 no.2 pp. 679-685
ISSN:
0032-0889
Subject:
protein synthesis; dose response; chitosan; seedlings; jasmonic acid; linoleate 13S-lipoxygenase; Puccinia graminis; Triticum aestivum; leaves; plant pathogenic fungi; oligosaccharides; chitin; enzyme activity; isozymes; protein composition
Abstract:
... A glycopeptide elicitor prepared from germ tubes of the rust fungus Puccinia graminis Pers. f. sp. tritici Erikss. & Henn (Pgt),as well as chitin oligosaccharides, chitosan, and methyl jasmonate (MJ) stimulated lipoxygenase (LOX) activity (E.C. 1.13.11.12) in wheat (Triticum aestivum) leaves. Immunoblot analysis using anti-LOX antibodies revealed the induction of 92- and 103-kD LOX species after P ...

8. Elicitor Actions of N-Acetylchitooligosaccharides and Laminarioligosaccharides for Chitinase and l-Phenylalanine Ammonia-lyase Induction in Rice Suspension Culture

Author:
Hiroshi Inui; Yasuhiro Yamaguchi; Shigehiro Hirano
Source:
Bioscience, biotechnology, and biochemistry 1997 v.61 no.6 pp. 975-978
ISSN:
1347-6947
Subject:
biotechnology; chitin; chitinase; chitosan; dose response; elicitors; oligosaccharides; phenylalanine; rice
Abstract:
... When a series of chitin oligosaccharides was added into a rice suspension culture, N-acetylchito- hexaose, N-acetylchitopentaose, and N-acetylchitotetraose caused an increase in extracellular chitinase activity, mainly due to induction of a class III chitinase. In the case of N-acetylchitohexaose, a substantial increase in the chitinase activity was observed at a concentration higher than 0.01 μg/ ...
DOI:
10.1271/bbb.61.975

9. Enhancement of antimicrobial activity of chitosan by irradiation

Author:
Matsuhashi, S.; Kume, T.
Source:
Journal of the science of food and agriculture 1997 v.73 no.2 pp. 237-241
ISSN:
0022-5142
Subject:
Escherichia coli; chitosan; degradation; irradiation; molecular weight; gamma radiation; antibacterial properties
Abstract:
... Antimicrobial activity of irradiated chitosan was studied against Escherichia coli B/r. Irradiation of chitosan at 100 kGy under dry conditions was effective in increasing the activity, and inhibited the growth of E coli completely. The molecular weight of chitosan significantly decreased with the increase in irradiation dose, whereas the relative surface charge of chitosan was decreased only 3% b ...
DOI:
10.1002/(SICI)1097-0010(199702)73:2<237::AID-JSFA711>3.0.CO;2-4

10. Myelin basic protein kinase activity in tomato leaves is induced systemically by wounding the increases in response to systemin and oligosaccharide elicitors

Author:
Stratmann, J.W.; Ryan, C.A.
Source:
Proceedings of the National Academy of Sciences of the United States of America 1997 v.94 no.20 pp. 11085-11089
ISSN:
0027-8424
Subject:
Solanum lycopersicum var. lycopersicum; leaves; enzyme activity; abiotic stress; models; insect pests; defense mechanisms; polypeptides; plant proteins; chitosan; phosphorylation; Manduca sexta
Abstract:
... In response to wounding, a 48-kDa myelin basic protein (MBP) kinase is activated within 2 min, both locally and systemically, in leaves of young tomato plants. The activating signal is able to pass through a steam girdle on the stem, indicating that it moves through the xylem and does not require intact phloem tissue. A 48-kDa MBP kinase is also activated by the 18-amino acid polypeptide systemin, ...
DOI:
10.1073/pnas.94.20.11085
PubMed:
9380763
PubMed Central:
PMC23618

11. Pharmacokinetics of an injectable sustained-release formulation of morphine for use in dogs

Author:
Tasker, R.A.R.; Ross, S.J.; Dohoo, S.E.; Elson, C.M.
Source:
Journal of veterinary pharmacology and therapeutics 1997 v.20 no.5 pp. 362-367
ISSN:
0140-7783
Subject:
dogs; morphine; drug formulations; gels; pharmacokinetics; subcutaneous injection; chitosan; polymers; bioavailability
DOI:
10.1046/j.1365-2885.1997.00072.x
PubMed:
9350256

12. Production of diosgenin by hairy root cultures of Trigonella foenum-graecum L

Author:
Merkli, A.; Christen, P.; Kapetanidis, I.
Source:
Plant cell reports 1997 v.16 no.9 pp. 632-636
ISSN:
0721-7714
Subject:
Trigonella foenum-graecum; roots; cultured cells; genetic transformation; Rhizobium rhizogenes; transgenic plants; biosynthesis; secondary metabolites; quantitative analysis; culture media; pH; cholesterol; chitosan; cell growth
Abstract:
... Hairy root cultures of Trigonella foenum-graecum L. were established with Agrobacterium rhizogenes strain A4. The hairy roots produce diosgenin, an important spirostanol for the semi-synthesis of steroid hormones. Fourteen different liquid media were investigated. The fastest growth was obtained in McCown's woody plant (WP) medium supplemented with 3% sucrose; the highest diosgenin content was obs ...
DOI:
10.1007/BF01275505

13. Purification and Characterization of the Chitinase (ChiA) from Enterobacter sp. G-l

Author:
Jae Kweon Park; Kenji Morita; Ikuo Fukumoto; Yukikazu Yamasaki; Tsuyoshi Nakagawa; Makoto Kawamukai; Hideyuki Matsuda
Source:
Bioscience, biotechnology, and biochemistry 1997 v.61 no.4 pp. 684-689
ISSN:
1347-6947
Subject:
Enterobacter; Salvia hispanica; ammonium sulfate; biotechnology; calcium; carboxymethylcellulose; chitin; chitinase; chitosan; culture filtrates; fractionation; gel chromatography; isoelectric point; molecular weight; pH; polyacrylamide gel electrophoresis; temperature
Abstract:
... Entevobacter sp. G-1 which produces chitinolytic and chitosanolytic enzymes, was previously isolated in our laboratory. One major chitinase, designated ChiA, was purified 42.9-fold from a culture filtrate of Entevobacter sp. G-L To purify the chitinase, ammonium sulfate fractionation, DEAE-Sephadex A-50 column chromatography, and gel filtration on Sephadex G-100 column chromatography were used. Th ...
DOI:
10.1271/bbb.61.684

14. Utilization of chitosan for preservation of raw shrimp (Pandalus borealis)

Author:
Simpson, B.K.; Gagne, N.; Ashie, I.N.A.; Noroozi, E.
Source:
Food biotechnology 1997 v.11 no.1 pp. 25-44
ISSN:
0890-5436
Subject:
shrimp; Pandalus borealis; raw foods; food preservation; food preservatives; chitosan; solutions; antibacterial properties; food spoilage; bacteria; volatile compounds; hypoxanthine; sensory evaluation
Abstract:
... Whole and headless shrimp (Pandalus borealis) were dipped in various concentrations of chitosan solution and stored for 20 days at 4-7 degrees C. The effects of chitosan on microbial proliferation, total volatile bases, nucleotide breakdown, and blackspot formation were monitored over this period. Chitosan showed strong antimicrobial properties inhibiting several microorganisms at concentrations r ...
DOI:
10.1080/08905439709549920