CAJ | 학술논문

芦竹作为一种多年生的能源植物，具有广阔的开发利用前景。以傅里叶变换拉曼光谱技术对苯醇抽提前后芦竹原料、磨木木质素以及不同碱处理时间获得的碱木质素进行了无损分析。研究结果表明，原料中苯醇抽出物的存在会降低芦竹拉曼特征峰的强度，但不产生新的拉曼特征峰。芦竹磨木木质素的拉曼光谱图表明芦竹木质素为SGH 型木质素。相比于木材磨木木质素，芦竹磨木木质素在1173 cm-1处的特征峰更强。通过对羟基肉桂酸标准物的拉曼光谱分析，进一步证实了该特征峰可能由草类原料中的羟基肉桂酸引起。此外，碱木质素拉曼光谱分析结果表明，碱处理40 min获得的木质素中羟基肉桂酸特征峰最强，松柏醛/芥子醛特征峰最弱，而松柏醇/芥子醇的特征峰几乎消失。可见，该碱木质素中酚酸含量最高，潜在的抗氧化性最好，利用价值最高。二维异核单量子碳氢相关谱进一步验证了所得结果，证实了傅里叶变换拉曼光谱技术可作为一种安全、快速、准确、无损的分析手段鉴定木质素结构。
호죽작위일충다년생적능원식물，구유엄활적개발이용전경。이부리협변환랍만광보기술대분순추제전후호죽원료、마목목질소이급불동감처리시간획득적감목질소진행료무손분석。연구결과표명，원료중분순추출물적존재회강저호죽랍만특정봉적강도，단불산생신적랍만특정봉。호죽마목목질소적랍만광보도표명호죽목질소위SGH 형목질소。상비우목재마목목질소，호죽마목목질소재1173 cm-1처적특정봉경강。통과대간기육계산표준물적랍만광보분석，진일보증실료해특정봉가능유초류원료중적간기육계산인기。차외，감목질소랍만광보분석결과표명，감처리40 min획득적목질소중간기육계산특정봉최강，송백철/개자철특정봉최약，이송백순/개자순적특정봉궤호소실。가견，해감목질소중분산함량최고，잠재적항양화성최호，이용개치최고。이유이핵단양자탄경상관보진일보험증료소득결과，증실료부리협변환랍만광보기술가작위일충안전、쾌속、준학、무손적분석수단감정목질소결구。
Arundo donax linn,as a perennial energy crop,has promising application prospect.In the present study,Fourier transform Raman (FT Raman)spectroscopy was applied to determine the structural information of materials,milled wood lignin (MWL),and alkaline lignins (AL,under different treated time)from A. donax stem nondestructively.The results indicated that,extractable compounds in A. donax had negative contribution to the Raman spectra without rising new Raman peaks.FT Raman spectrum of MWL indicated that MWL from A. donax was HGS type lignins.Compared with the spectra of MWL from wood materials,the peak at 1 173 cm-1 was much higher in intensity for the MWL from A. donax stem,which may be assigned to hydroxycinnamic acid by analyzing the standard.With respect to FT Raman spectra of ALs,the relatively highest intensity of 1 173 cm-1 was found in alkaline lignin (AL2 ),which was treated for 40 min by alkaline.Moreover,the peak of coniferalde-hyde/sinapaldehyde (1 630 cm-1 )was lowest in intensity while the band attributed to coniferyl alcohol/sinapyl alcohol (1 660 cm-1 )was almost disappeared in AL2 .It could be inferred that AL2 demonstrated a highest content of phenolic acid,which may improve its potential application,such as for antioxidant activity.Furthermore,the results obtained by FT Raman spectra were verified by two dimensional heteronuclear singlequantum coherence nuclear magnetic resonance analyses.Above all,FT Raman spectroscopy provided alternative safe,rapid,accurate,and nondestructive technology for lignin structure determination.