{"doi":"10.1002/bip.360210206","title":"Crystallization behavior of glucomannan","abstract":"<jats:title>Abstract</jats:title><jats:p>Five different glucomannan samples were recrystallized from dilute solution. Depending on the experimental conditions, the crystals obtained could be identified as corresponding to the mannan I (anhydrous precipitate of more or less regular lozenge‐shaped crystals) or mannan II (hydrated gel‐forming pseudo‐fibrillar precipitate). High‐molecular‐weight material, low temperature of crystallization, or a polar crystallization medium favored the mannan II polymorph, whereas a low‐molecular weight, a high temperature of crystallization, and a crystallization medium of low polarity yielded the mannan I polymorph. Since the base‐plane unit‐cell dimensions are fairly constant with respect to variation of glucose, it is likely that isomorphous replacement of mannose by glucose occurs in glucomannan crystallization; the data also indicate that perfection of the glucomannan crystals was reduced in specimens having a high glucose:mannose ratio. The oriented crystallization of glucomannan on cellulose microfibrils was also studied under conditions where the mannan I polymorph was obtained. This gave shish‐kebab structures that were characterized.</jats:p>","journal":"Biopolymers","year":1982,"id":671197,"datarank":6.461287186591684,"base_score":4.2626798770413155,"endowment":4.2626798770413155,"self_citation_contribution":0.6394019815561974,"citation_network_contribution":5.821885205035486,"self_endowment_contribution":0.6394019815561974,"citer_contribution":5.821885205035486,"corpus_percentile":null,"corpus_rank":null,"citation_count":70,"citer_count":67,"citers_with_citation_signal":64,"citers_with_endowment":64,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1753419,"name":"A. Grosrenaud","orcid":null,"position":1,"is_corresponding":false},{"id":1753420,"name":"J. P. 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High‐molecular‐weight material, low temperature of crystallization, or a polar crystallization medium favored the mannan II polymorph, whereas a low‐molecular weight, a high temperature of crystallization, and a crystallization medium of low polarity yielded the mannan I polymorph. Since the base‐plane unit‐cell dimensions are fairly constant with respect to variation of glucose, it is likely that isomorphous replacement of mannose by glucose occurs in glucomannan crystallization; the data also indicate that perfection of the glucomannan crystals was reduced in specimens having a high glucose:mannose ratio. The oriented crystallization of glucomannan on cellulose microfibrils was also studied under conditions where the mannan I polymorph was obtained. 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