These additives include: Phenylmethylsulfonyl fluoride (PMSF, dissolved in very small amount of propanol just before extraction) to inhibit protease Flavin compounds (FAD) Dithiothreitol (DTT), to preserve the sulfhydryl group EDTA, as chemical chelator especially with phosphate buffer Sodium fluoride to inhibit phosphatase Polyphenylpyrovate (PVP) 25 gm/k gm fresh weight of sample, which is an insoluble compound and binds to phenolic compound present in the sample, the obtained compound discarded by centrifugation 30% glycerol, which may help to stabilize some highly labile proteins Antibiotic such as Hibitane, usually used in protein extracted from rhizomes or underground plant parts in general Filter the homogenate with nylon mush, then centrifuge at 10,000 g for 10 min using cooling centrifuge
This targeted under-eye treatment addresses dark circles, crepey texture, fine lines, hollowing, and tired appearance while improving brightness, skin thickness, firmness, and collagen density
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For decades, GPX typically uses glutathione (GSH) as a reducing agent in catalyzing the reduction of H 2 O 2 or organic hydrogen peroxide to water or corresponding alcohols, respectively ( 2 O 2 and rapid reduction by GSH (Zhao et al., 2019)