大果紫檀心材抽提物发色成分及其对颜色的影响

doi:10.3969/j.issn.0253-2417.2018.05.011

林产化学与工业 ›› 2018, Vol. 38 ›› Issue (5): 77-84.doi: 10.3969/j.issn.0253-2417.2018.05.011

大果紫檀心材抽提物发色成分及其对颜色的影响

张鹏, 卫燕霞, 刘炀, 陈瑶, 高建民, 樊永明

木质材料科学与应用教育部重点实验室;木材科学与工程北京市重点实验室;北京林业大学, 北京 100083

收稿日期:2018-07-10 出版日期:2018-10-25 发布日期:2018-11-06
通讯作者: 高建民,教授,博士生导师,研究领域为木材节能干燥、木材热加工及功能性改良、木质素基碳材料、木陶瓷材料;E-mail:jmgao@bjfu.edu.cn。 E-mail:jmgao@bjfu.edu.cn
作者简介:张鹏(1987-),男,内蒙古赤峰人,博士生,主要从事木材诱发变色研究;E-mail:rulai9565@hotmail.com
基金资助:
国家自然科学基金资助项目（3140030098）

Extraction of Chromogenic Component from Pterocarpus macrocarpus Kurz. Heartwood and Its Effect on Wood Color

ZHANG Peng, WEI Yanxia, LIU Yang, CHEN Yao, GAO Jianmin, FAN Yongming

MOE Key Laboratory of Wooden Materials Science and Application;Key Laboratory of Beijing for Wood Science and Engineering;Beijing Forestry University, Beijing 100083, China

Received:2018-07-10 Online:2018-10-25 Published:2018-11-06

摘要/Abstract

摘要： 采用水、苯醇和二氧六环3种溶剂对深色和浅色大果紫檀试样进行抽提，通过色度指数、FT-IR、UV和GC-MS等手段分析了研究对象大果紫檀心材抽提物的主要发色成分，以揭示其发色机理。研究发现：大果紫檀主要显红色色调，其中深色试样在蓝绿色光谱区域（496 nm）有较强的吸收使得其红绿轴色品指数（a^*）值较高。同种溶剂从浅色试样中溶解的发色成分较多，浅色试样抽提后色差普遍高于深色试样，其中二氧六环抽提后大果紫檀色差最大。水抽提物中的发色成分是不饱和醇类；苯醇抽提物中发色成分主要含有苯环结构、共轭羰基、非共轭羰基以及不饱和醇类结构；二氧六环抽提物中主要的发色成分是β-桉叶醇、高紫檀素和α-胡椒烯-11-醇，其中β-桉叶醇和高紫檀素是大果紫檀中与a^*相关的发色物质。

关键词: 大果紫檀, 木材颜色, 抽提物, 发色成分

Abstract: Two groups of Pterocarpus macrocarpus Kurz. heartwood with different color were used as research objects in the present study to reveal its chromogenic mechanism. Extractives from water, benzene-alcohol, and dioxane were analyzed. Then, the color parameter and structure of extractives was measured by means of CIE Lab, FT-IR, UV-VIS and GC-MS spectroscopic analysis. It was found that P.macrocarpus wood was mainly reddish, and the deep-colored sample had a strong absorption in the green spectral region (496 nm), resulting in a higher a^* value. More chromophoric components in light-colored samples were extracted with the same solvent compared with deep-colored samples. And the chromatic aberration of light-colored samples after extraction was higher than that of deep-colored samples. The chromatic aberration reached at the maximum value after extracted by 1,4-dioxane solvent compared to water and benzene-alcohol solvent. The main chromophore components in water extractive were unsaturated alcohol; in benzene-alcohol extractive, it contained unsaturated alcohol and conjugated carbonyl, benzene ring, non-conjugated carbonyl structures;in dioxane extractive, they were β-eudesmol, homopterocarpin and α-copaen-11-ol. β-eudesmol and homopterocarpin were the chromophoric substances related to the red-green axis chromaticity index a^* in wood.

Key words: Pterocarpus macrocarpus Kurz., wood color, extractive, chromophoric component

中图分类号:

TQ35

张鹏, 卫燕霞, 刘炀, 陈瑶, 高建民, 樊永明. 大果紫檀心材抽提物发色成分及其对颜色的影响[J]. 林产化学与工业, 2018, 38(5): 77-84.

ZHANG Peng, WEI Yanxia, LIU Yang, CHEN Yao, GAO Jianmin, FAN Yongming. Extraction of Chromogenic Component from Pterocarpus macrocarpus Kurz. Heartwood and Its Effect on Wood Color[J]. Chemistry and Industry of Forest Products, 2018, 38(5): 77-84.

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大果紫檀心材抽提物发色成分及其对颜色的影响

Extraction of Chromogenic Component from Pterocarpus macrocarpus Kurz. Heartwood and Its Effect on Wood Color

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