Agarwood, which is used as medicine and incense, contains sesquiterpenes and chromones. Agarotetrol is a chromone derivative found in high concentrations in the water-extract fraction of agarwood and thus may be present in pharmaceutical products made from decoctions of agarwood. Agarotetrol has been reported to be present at the early stages of cell death in calli. We therefore examined the presence of agarotetrol in medical- and incense-grade agarwood, in agarwood-source plants lacking resin deposits, and in artificially made agarwood. Agarotetrol appeared as a large peak in the HPLC chromatograms of all samples of medical-grade and artificially made agarwood, and in most incense-grade agarwood samples. In contrast, agarwood samples lacking resin deposits did not contain agarotetrol. These results show that agarotetrol is characteristic of resin formation. Agarotetrol was also detected in decoctions of agarwood. A newly developed TLC method for the detection of agarotetrol in agarwood is described.

中文翻译：

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沉香中的琼脂：用于评估沉香质量。

沉香用作药物和熏香，含有倍半萜和色酮。琼脂糖醇是一种高发色酮衍生物，存在于沉香树的水提取物中，因此可能存在于由沉香树汤制成的药品中。据报道，琼脂糖醇存在于愈伤组织中细胞死亡的早期。因此，我们检查了药用级和沉香级沉香木，缺少树脂沉积物的沉香木植物以及人造沉香中存在琼脂糖醇。在所有医用级和人造沉香木样品以及大多数香级沉香木样品的HPLC色谱图中，琼脂糖醇都显示为一个大峰。相反，缺少树脂沉积物的沉香木样品不含琼脂糖醇。这些结果表明，琼脂糖醇是树脂形成的特征。在沉香汤中也检测到了琼脂糖醇。描述了一种新开发的薄层色谱法，用于检测沉香中的琼脂糖醇。