Table 5. Vitamin B₁₂ contents of processed marine products frequently consumed in Korea

Processed products			Cyanocobalamin (μg/100 g)¹⁾
Category	Roman name and description	Scientific name	Cyanocobalamin (μg/100 g)¹⁾
Fish	Dongtae-jeon, frozen	Theragra chalcogramma	1.56±0.02^e2)
	Dongtae-jeon, frozen, cooked	Theragra chalcogramma	1.89±0.14^e
	Fish cutlet, frozen	-	0.83±0.04^f
	Fish cutlet, deep-fried	-	0.53±0.09^f
	Fish cutlet, air-fried	-	0.83±0.14^f
	Flying fish roe, frozen	Cheilopogon spp.	4.56±0.18^c
	Flying fish roe, steamed	Cheilopogon spp.	4.19±0.24^c
	Jwipo strips, raw	Thamnaconus modestus	2.51±0.29^d
	Kodari, frozen	Theragra chalcogramma	2.51±0.12^d
	Kodari, boiled	Theragra chalcogramma	2.54±0.08^d
	Galchi-sokjeot, product A	Trichiurus lepturus	2.40±0.14^d
	Galchi-sokjeot, product B	Trichiurus lepturus	2.64±0.30^d
	Galchi-sokjeot, product C	Trichiurus lepturus	2.28±0.29^d
	Fish sausage, cheese	-	0.32±0.01^f
	Fish sausage, original	-	0.13±0.01^f
	Fish sauce	-	ND³⁾
	Salted anchovy sauce, product A	Engraulis japonicus	0.79±0.06^f
	Salted anchovy sauce, product B	Engraulis japonicus	0.73±0.10^f
	Salted anchovy sauce, product C	Engraulis japonicus	0.88±0.08^f
Crustaceans	Shrimp cutlet, frozen	Penaeus spp.	0.54±0.01^f
	Shrimp cutlet, frozen, deep-fried	Penaeus spp.	0.56±0.08^f
	Shrimp cutlet, frozen, air-fried	Penaeus spp.	0.52±0.06^f
	Whiteleg shrimp, boiled	Litopenaeus vannamei	0.70±0.08^f
Cephalopods	Hunje ojing-eo (squid)	Todarodes pacificus	4.32±0.34^c
	Ojingeo-twigim, freezed	Todarodes pacificus	1.29±0.01^e
	Ojingeo-twigim, freezed, fried food	Todarodes pacificus	1.37±0.07^e
	Ojingeo-twigim, freezed, air-fried	Todarodes pacificus	0.84±0.07^e
Mollusks	Ureong (river snail), boiled	Semisulcospira libertina	1.17±0.04^e
	Canned cockle	Tegillarca granosa	19.75±0.48^a
	Boiled whelk, frozen	Buccinum undatum	0.33±0.01^f
	Boiled whelk, frozen, with broth	Buccinum undatum	ND
	Eoriguljeot, product A	Crassostrea gigas	13.72±1.17^a
	Eoriguljeot, product B	Crassostrea gigas	7.89±0.38^b
	Eoriguljeot, product C	Crassostrea gigas	11.26±0.32^a
	Abalone porridge	Haliotis discus hannai	ND
Seaweeds	Seaweed chips (Gim-bugak)	Porphyra spp.	7.69±0.04^b
	Kelp chips (Dasima-bugak)	Laminaria japonica	0.36±0.05^f
	Sea mustard chips (Miyeok-bugak)	Undaria pinnatifida	1.28±0.01^e

All values are mean±SD (n=3).
Mean±SD. Means with different lowercase letters (^a-f) in the same column are significantly different among groups at p<0.05 by Duncan’s multiple range test.
ND, not detected.