Table 2. Comparison of yield of heparin extracted from pig organs using three different enzymes

Organ	Extracted heparin (mg)
Organ	Trypsin	Papain	Alkaline-AK
Liver	453 ± 102^a	391 ± 49^a	473 ± 22^a
Lung	118 ± 11^c	112 ± 18^c	132 ± 13^c
Heart	344 ± 115^a	359 ± 62^a	491 ± 26^a
Stomach	308 ± 86^b	196 ± 19^b	281 ± 79^b
Small intestine	195 ± 64^b	171 ± 64^b	224 ± 58^b
Large intestine	194 ± 44^b	266 ± 28^b	256 ± 34^b

Extracted heparin yield per original pig by-products 1 kg. Data are given as mean values ± SD (n = 3).
p < 0.05 depends on organ.