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Titolo:
Exploring chitin morphologies in cuticle fragments of Xiphopenaeus kroyeriby atomic force microscopy
Autore:
Andrade, CT; Silva, KM; Simao, RA; Achete, C;
Indirizzi:
Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, BR-21945970 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro Rio De Janeiro Brazil BR-21945970 BCeiro, Brazil Univ Fed Rio de Janeiro, COPPE, Programa Engn Met & Mat, BR-21945970 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro Rio De Janeiro Brazil BR-21945970 BCeiro, Brazil
Titolo Testata:
CARBOHYDRATE POLYMERS
fascicolo: 1, volume: 47, anno: 2002,
pagine: 59 - 71
SICI:
0144-8617(200201)47:1<59:ECMICF>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
BETA-CHITIN; ALPHA-CHITIN; ELECTRON-MICROSCOPY; FIBRIL FORMATION; CENTRIC DIATOMS; CRYSTALS; FILMS; SITE;
Keywords:
atomic force microscopy; imaging of surfaces with AFM in air; imaging of the exocuticle of the shrimp Xiphopenaeus kroyeri; imaging of stiff chitin microfibrils; chitin;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Andrade, CT Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, POB 68525, BR-21945970 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro POB 68525 Rio De Janeiro Brazil BR-21945970 BC
Citazione:
C.T. Andrade et al., "Exploring chitin morphologies in cuticle fragments of Xiphopenaeus kroyeriby atomic force microscopy", CARBOHY POL, 47(1), 2002, pp. 59-71

Abstract

Shells of Xiphopenaeus kroyerishrimp were submitted to mild acid and alkaline treatments to produce alpha chitin films, which were characterised by infrared spectroscopy. Dynamic AC operational mode atomic force microscopy (AFM) was used to image the external surface and regions of an inner surfaceof the cuticle. All samples were scanned in air. No modification of the surface structure was observed even while scanning for a long time. Chitin was visualised as microfibrils of varying thicknesses and shapes. Bundles of cracked microfibrils, as well as nearly straight microfibrils occur in the exocuticle. Scanning of an inner region clearly disclosed a bundle of microfibrils in helicoidal pattern. Non-straight microfibrils were visualised inthe rostrum, as well as bundles of straight microfibrils. Estimation of the crystals thickness showed that those pertaining to bundles generally havethe largest diameters. (C) 2002 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 12:55:05