Data for: Regioselective Degradation of [beta] 1,3 Glucan by Ferrous Ion and Hydrogen Peroxide (Fenton Oxidation)

Fenton oxidation of laminaran generated six classes of products from algal laminaran (beta-1,3 poly glucan [with beta-1,6 glucose decorations]).

Elution profiles from HPLC/MS of tert-butyl tyrosine-labeled sugars and unlabeled sugar acids are presented as evidence of ring scission of glucose monomers by Fenton secondary oxidants.

The oxidation products of laminaran by Fe+2 ions, H2O2, H2O, are consistent with the actions of hydroxyl radicals, ferryl-oxo ions, and perferryl-oxo ions. Each secondary oxidant was differentiated from the other secondary oxidants by unique reactions not common to the other two oxidants.

Perferryl-oxo ions are uniquely responsible for carboxylic acids, while ferryl-oxo ion oxidations are primarily responsible for aldose / dialdose pairs. Hydroxyl radicals oxidized Fe+2 ions to Fe+3 ions, and are thus indirectly responsible for carboxylic acid generation.

Fenton oxidation of carbohydrates represents a universal (non-specific and non-enzymatic) mechanism for degradation of carbohydrates.

芬顿氧化（Fenton oxidation）可将藻类来源的昆布多糖（laminaran，即带有β-1,6葡萄糖侧链修饰的β-1,3-葡聚糖）降解为六大类产物。
本研究呈现了经叔丁基酪氨酸（tert-butyl tyrosine）标记的糖类与未标记糖酸的高效液相色谱-质谱联用（HPLC/MS）洗脱图谱，以此作为葡萄糖单体被芬顿次级氧化剂引发环断裂的实验佐证。
由亚铁离子（Fe²+）、过氧化氢（H₂O₂）与水（H₂O）介导的昆布多糖氧化产物，与羟基自由基（hydroxyl radicals）、亚铁酰氧离子（ferryl-oxo ions）及高亚铁酰氧离子（perferryl-oxo ions）的作用机制高度吻合；三类次级氧化剂可通过各自独有的、不为另外两类氧化剂共有的反应实现相互区分。
高亚铁酰氧离子是羧酸生成的唯一专属诱因；亚铁酰氧离子的氧化作用则主要负责生成醛糖/二醛糖对；羟基自由基可将Fe²+氧化为Fe³+，从而间接参与羧酸的生成过程。
碳水化合物的芬顿氧化是一种通用、非特异性且非酶促的碳水化合物降解机制。