Abstract

Pullulan, a water-soluble polysaccharide consisting of maltotriose units used in the preparation of edible films and drug delivery, is generally produced from starch by Aureobasidium pullulans (de Bary & Löwenthal) G.Arnaud fungus. In this article, the characterisation of an alternative pullulan source − the stromata of Cyttaria hariotii E.Fisch. fungus − by elemental analysis, infrared spectroscopy and thermal analysis techniques is reported. With a view to a possible valorisation of this pullulan and its derivatives as bioactive formulations in agriculture, low-molecular-weight pullulan (<7 kDa) complexes with Mn(II), suitable for the remediation of Mn-deficiencies in winter cereal by foliar application, were synthesised and characterised by mass spectrometry.

摘要

普鲁兰多糖是一种由麦芽三糖单元组成的水溶性多糖，用于制备可食用薄膜和药物递送，通常由Aureobasidium pullulans (de Bary & Löwenthal) G.Arnaud 真菌从淀粉中生产。在本文中，另一种普鲁兰多糖来源的表征 - Cyttaria hariotii E.Fisch 的基质。真菌 - 报告了元素分析、红外光谱和热分析技术。考虑到这种普鲁兰多糖及其衍生物在农业中作为生物活性制剂的价值，低分子量普鲁兰多糖 (<7 kDa) 与锰 (II) 复合，适用于通过叶面修复冬季谷物中的锰缺乏症应用，合成和质谱表征。