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A translucent collagen gel was formed from a transparent acidic solution of red stingray collagen by adjusting to physiological ionic strength and pH in phosphate buffer and then incubating at 25–37°C. During fibril formation from red stingray collagen, the turbidity increased when the NaCl concentration was increased at constant pH and the rate of fibril formation was accelerated by higher pH or...
Acid-soluble collagens (ASCs) were extracted from the skins of several underutilised fishes, namely dusky spinefoot (Siganus fuscescens), sea chub (Kyphosus bigibbus), eagle ray (Myliobatis tobijei), red stingray (Dasyatis akajei) and yantai stingray (Dasyatis laevigata). The yields of the ASCs from skins of dusky spinefoot and sea chub were about 3.4–3.9%, and from ray species were about 5.3–5.7%,...
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