海藻の生化学的研究-II
あさくさのりの品質と一般成分との関係
1971 年 37 巻 1 号 p. 30-34
詳細
1971 年 37 巻 1 号 p. 30-34
“Asakusanori”, the dried laver of Porphyra yezoensis, was obtained from different culture grounds in Ise Bay and analyzed for total nitrogen, protein nitrogen, carbohydrate, crude fibre, crude fat and ash, to ascertain the relation between quality chemical composition.
1) Superior samples generally contained more of the total nitrogen and protein nitrogen than the inferior ones.
2) The ratio of protein nitrogen to total nitrogen was 80-85% in the former and 70-75% in the latter.
3) Differing from the previous reports, it was recognized that the inferior samples contained more carbohydrate than the superior ones. A negative correlation was found between the carbohydrate and total nitrogen contents.
4) Seasonal changes of the chemical composition were studied by using the specimens from a culture ground in the Shiroko district. Total nitrogen and protein nitrogen showed a gradual decrease with the lapse of culture, but the carbohydrate and crude ash content increased gradually.
