作为丰富的海洋生物资源,可以在食品工业中开发被膜。然而,对其化学成分和营养成分的了解有限,禁止进一步应用。在这项研究中,两种常见的可食用被膜动物,卤虫(HR)和卤虫(HA),进行了水分综合成分分析,蛋白质,脂质,纤维素,灰,氨基酸,脂肪酸,非纤维素碳水化合物和矿物质。在身长和体重方面,红HR比紫色HA大得多,水分在82.98%-90.92%以内。对于两种物种,非可食用外壳部分(OS)和可食用内脏器官部分(IO)具有约3:2的干重比。一般来说,对于HR和HA,IO在蛋白质和脂质中更丰富。相比之下,OS有更高的纤维素含量,确认IO作为营养海鲜的更好适用性。IO富含必需氨基酸和不饱和脂肪酸,OS具有更丰富的饱和脂肪酸。检测到的非纤维素单糖范围为0.47%至1.18%,并且表明存在一些硫酸化聚糖。HR的IO具有较高的必需矿物质含量,如Cu,Zn,Fe,HA的IO表现出较高的K含量。总而言之,这项研究确定了不同被囊动物物种和各种解剖部位之间的化学成分和营养分布差异,指导开发特定策略,以开发适当的食物应用。
As an abundant marine bioresource, tunicates could be exploited in the food industry. However, limited knowledge of their chemical composition and nutritional profiles prohibited further application. In this study, two common edible tunicate species, Halocynthia roretzi (HR) and Halocynthia aurantium (HA), were subjected to comprehensive composition analysis in terms of moisture, protein, lipids, cellulose, ash, amino acids, fatty acids, non-cellulose carbohydrates and minerals. Reddish HR was much bigger than purple HA with respect to body length and weight, and their moisture fell within 82.98 %-90.92 %. The non-edible outer shell part (OS) and edible internal organs part (IO) had a dry weight ratio of around 3:2 for both two species. Generally, for both HR and HA, IO was more abundant in protein and lipids. In contrast, OS had much higher cellulose contents, confirming the better suitability of IO as a nutritional seafood. IO was richer in essential amino acids and unsaturated fatty acids, while OS had more abundant saturated fatty acids. The detected non-cellulose monosugars ranged from 0.47 % to 1.18 % and indicated the presence of some sulfated glycans. IO of HR had higher contents of essential minerals, such as Cu, Zn, and Fe, while IO of HA showed a higher K content. To sum up, this study identified the chemical composition and nutritional profile variations among different tunicate species and various dissected parts, guiding the development of specific strategies to exploit tunicates for proper food applications.