| 摘要: |
| 【目的】研究不同天然类型栓皮栎软木的主要化学组分，为栓皮栎的选型与培育以及充分利用栓皮栎软木资源提供理论依据。【方法】2010-07，从陕西商州区二龙山林场树龄33～50年的栓皮栎天然林中采剥栓皮厚度和裂纹深度不一的4种类型的栓皮栎软木，按照GB/T 2677《造纸原料的化学成分测定》中的方法对软木中的抽提物、木栓脂、纤维素和木质素进行测定与分析。【结果】4种类型栓皮栎软木的主要化学组分存在差异。抽提物总量质量分数的高低为薄皮浅裂型>厚皮深裂型>薄皮深裂型>厚皮浅裂型；木栓脂质量分数的高低为薄皮深裂型>薄皮浅裂型>厚皮深裂型>厚皮浅裂型；纤维素质量分数的高低为厚皮深裂型>厚皮浅裂型>薄皮浅裂型>薄皮深裂型；木质素质量分数的高低为薄皮深裂型>厚皮浅裂型>厚皮深裂型>薄皮浅裂型。【结论】综合分析比较主要化学组成对软木性能的影响，4种栓皮栎类型软木的优良性依次为：薄皮深裂型>薄皮浅裂型>厚皮浅裂型>厚皮深裂型。因此从软木性能方面考虑，首选薄皮深裂型。 |
| 关键词: 栓皮栎天然类型 软木 化学组分 |
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| 基金项目:国家林业局林业公益性行业科研专项(201004011）；国家自然科学基金项目(30872018) |
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| Main chemical components and utilization analyses of different natural Quercus variabilis corks in Shaanxi |
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ZHAO Jing-feng,FENG De-jun,ZHANG Wen-hui,et al
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| Abstract: |
| 【Objecttive】 The research aimed to study the main chemical components of different natural Quercus variabilis corks,and provide theoretical basis for selection and cultivation of Q.variabilis.【Method】 In July 2010,4 types of corks with different thickness and crack depths were collected from 33-50 years old Q.variabilis natural forest in Erlongshan Forest Farm in Shangzhou,Shaanxi.Based on the approaches regulated in GB/T 2677 “Determination of chemical composition for paper-making materials”,the extracts,suberin,cellulose and lignin in corks were determined and analyzed.【Result】 There were differences in the chemical components of 4 different types of Q.variabilis corks.The masses of total extracts were in a decreasing order of thin bark and shallow crack type＞thick bark and deep-crack type＞thin bark and deep crack type＞thick bark and shallow crack type.The masses of suberin were in a decreasing order of thin bark and deep crack type＞thin bark and shallow crack type＞thick bark and deep crack type＞thick bark and shallow crack type.The masses of cellulose were in a decreasing order of thin bark and deep-crack type＞thick bark and shallow crack type＞thin bark and shallow crack type＞thin bark and deep-crack type.The masses of lignin were in a decreasing order of thin bark and deep-crack type＞thick bark and shallow crack type＞thick bark and deep crack type＞thin bark and shallow crack type.【Conclusion】 Comprehensively,the superiorities of the 4 types were thin bark and deep-crack type＞thin bark and shallow crack type＞thick bark and shallow crack type＞thick bark and deep crack type.Thus,the thin bark and deep-crack type was suggested. |
| Key words: natural Quercus variabilis cork chemical components |
