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한국식물학회 / v.51, no.2, 2008년, pp.139-144 
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( The Relationship between Lignin and Morphological Characteristics of the Tracheary Elements from Cacao (Theobroma cacao L.) Hulls ) |
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| 초 록 |
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| Tracheary elements (TEs) were physically separated from the hulls of cacao pods (Theobroma cacao L.). Their morphological features were extensively investigated with scanning electron microscopy and chemical characterization. Spiral TEs were covered with a thin layer of primary wall that had a web-like structure on its outer surface. These TEs had a spiral circularity diameter of $8.2;{pm};0.6;{mu}m$ and an estimated secondary wall thickness of about $2.1;{pm};0.2;{mu}m$. Polarized microscopy analysis revealed that the cellulose microfibrils were aligned parallel to that thickening. Lignin content was 36.1%, with a 0.13:1.00 molar ratio of syringyl to guaiacyl units and a 1.09:1.00 molar ratio of erythronic acid and threonic acid. Total yields of the alkaline nitrobenzene oxidation and ozonation products were 324.5 and $148.8;{mu}mol;g^{-1}$ of extract-free TEs, respectively. Based on these morphological and lignin characteristics, we conclude that fully ripened cacao hulls exhibit the same features of secondary wall thickening as those seen at an earlier stage. |
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| 키워드 |
| lignin;nitrobenzene oxidation;ozonation;tracheary element;Theobroma cacao L.; |
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Journal of Plant Biology / v.51, no.2, 2008년, pp.139-144
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814357780307)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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