Bhosle Narayan B, Garg Anita, Fernandes Loreta, Citon Pierre
Marine Corrosion and Material Division, National Institute of Oceanography, Dona Paula, Goa, India.
Biofouling. 2005;21(2):99-107. doi: 10.1080/08927010500097821.
The conditioning film developed on glass panels immersed in surface seawater over a period of 24 h was analysed for total organic carbon (OC), total organic nitrogen (ON), and total hydrolyzable amino acid (THAA) concentrations and composition. The concentrations of C and N and THAA increased, whereas the C/N ratio decreased over the period of immersion. The amino acid-C and N accounted for 3.7-6.7% and 10.3-65.3% of OC and ON, respectively. The relative contribution of glycine plus threonine and serine to the total amino acids decreased while that of valine, phenylalanine, isoleucine and leucine increased over the period of immersion. Principal component analysis (PCA) based on mole% amino acid composition showed that the degradation indices (DI) for the conditioning film organic matter increased over the period of immersion. A high C/N ratio, a low %THAA-C, % THAA-N and DI values and the abundance of glycine plus threonine and serine in the conditioning film organic matter during the first few hours following immersion imply that the adsorbed organic matter was mostly derived from degraded organic matter.
对浸泡在表层海水中24小时的玻璃板上形成的调节膜进行了总有机碳（OC）、总有机氮（ON）和总可水解氨基酸（THAA）浓度及组成分析。在浸泡期间，C、N和THAA的浓度增加，而C/N比下降。氨基酸-C和氨基酸-N分别占OC和ON的3.7 - 6.7%和10.3 - 65.3%。在浸泡期间，甘氨酸加苏氨酸和丝氨酸占总氨基酸的相对贡献下降，而缬氨酸、苯丙氨酸、异亮氨酸和亮氨酸的相对贡献增加。基于摩尔百分比氨基酸组成的主成分分析（PCA）表明，调节膜有机物的降解指数（DI）在浸泡期间增加。浸泡后最初几个小时内，调节膜有机物中高C/N比、低%THAA-C、%THAA-N和DI值以及甘氨酸加苏氨酸和丝氨酸的丰度表明，吸附的有机物大多来自降解的有机物。
