Pigskin Memories

The extraction of collagen protein from pigskin

As the collagen protein market increasingly grows, it becomes a priority to explore a economic, stable, and environmentally-friendly extraction method to realize the high-value transformation of pigskin. In this paper, the structure of collagen protein is introduced first. Then five methods, which extract collagen protein from pigskin or a kind of leather industry waste-chrome shavings, are rev...

Preparation of Collagen from the Pigskin Shavings by Alkali Extraction

Alkaline treatment method was used to ext ract collagen. Sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) and circular dichroism (CD) spectra revealed that the alkali-soluble pigskin collagen (ASPC) retained the polypeptide chains and triple helix conformat ion. The amino acid profiles showed no major deviation from the characteristic collagen composition. Both of the denat...

Memories

Memories Improbable: "Recovered Memories" in Perspective

Traumatic memories are not necessarily accurate memories.

Some therapists, as well as other commentators, have suggested that memories of horrific trauma are buried in the subconscious by some special process, such as repression, and are later reliably recovered. We find that the evidence provided to support this claim is flawed. Where, then, might these memory reports come from? We discuss several research paradigms that have shown that various manip...