Uéda K, Kawai K
Biochim Biophys Acta. 1979 May 1;584(2):339-45. doi: 10.1016/0304-4165(79)90279-4.
Spectral analysis at liquid N2 temperature of the circumesophageal ganglia of Aplysia juliana showed that carotenoids and a hemoglobin-like pigment are contained in concentrations of approx. 25 and 3 micronM, respectively, in the whole ganglia. Microspectrophotometrical measurements of Aplysia neurons indicated that the carotenoids reside on lipochondria in a concentration of approx. 38 mM. In addition to lipochondria, two types of pigmented particulate having absorption maxima at about 512 and 525 nm, respectively, were found in the neurons. The neuronal carotenoids consist of violaxanthin, beta-carotene and one minor component; among them the first occupies approx. 77% of total carotenoids. Two principal absorption maxima of the carotenoids, when existing in both ganglial homogenates and Triton X-100 extracts, show a red shift of 10 nm compared with those of free pigments in hexan. The red shift may be interpreted as due to the solvation of the carotenoids by surrounding lipids.
对朱利安娜海兔食管周围神经节在液氮温度下进行的光谱分析表明，整个神经节中类胡萝卜素和一种类似血红蛋白的色素的浓度分别约为25微摩尔/升和3微摩尔/升。对海兔神经元的显微分光光度测量表明，类胡萝卜素以约38毫摩尔/升的浓度存在于脂质体中。除脂质体外，在神经元中还发现了两种分别在约512纳米和525纳米处有吸收最大值的色素颗粒。神经元中的类胡萝卜素由紫黄质、β-胡萝卜素和一种次要成分组成；其中第一种约占总类胡萝卜素的77%。当类胡萝卜素同时存在于神经节匀浆和Triton X-100提取物中时，其两个主要吸收最大值与己烷中游离色素相比出现了10纳米的红移。这种红移可能被解释为是由于类胡萝卜素被周围脂质溶剂化所致。
