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pepsin    
n. 胃液素,酸蛋白酶

胃液素,酸蛋白□

pepsin
n 1: an enzyme produced in the stomach that splits proteins into
peptones

Pepsin \Pep"sin\ (p[e^]p"s[i^]n), n. [Gr. pe`psis a cooking,
digesting, digestion, fr. pe`ptein, pe`ssein, to cook,
digest: cf. F. pepsine. Cf. {Dyspepsia}.] (Physiol. Chem.)
A proteolytic enzyme (MW 34,500) contained in the secretory
glands of the stomach. In the gastric juice it is united with
dilute hydrochloric acid (0.2 per cent, approximately) and
the two together constitute the active portion of the
digestive fluid. It degrades proteins to proteoses and
peptides, and is notable for having a very low pH optimum for
its activity. It is the active agent in the gastric juice of
all animals.
[1913 Webster PJC]

Note: As prepared from the glandular layer of pigs' or
calves' stomachs it constitutes an important article of
pharmacy.
[1913 Webster]


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  • Pepsin - Wikipedia
    Pepsin ˈpɛpsɪn is an endopeptidase that breaks down proteins into smaller peptides and amino acids It is one of the main digestive enzymes in the digestive systems of humans and many other animals, where it helps digest the proteins in food Pepsin is an aspartic protease having a catalytic aspartate in its active site [2] Pepsin is one of three endopeptidases (enzymes cleaving
  • How to Neutralise Pepsin in the Throat: Every Method That Works
    Pepsin in the throat is the real cause of most LPR symptoms — not acid Here's exactly how to deactivate it, stop it being reactivated, and prevent more from reaching the throat in the first place
  • Rethinking Reflux: The Real Culprit Isn’t Acid—It’s Pepsin
    Conclusion Reflux isn’t just about acid—it’s about pepsin By shifting our focus from acid suppression to pepsin control, we can revolutionize reflux treatment and provide lasting relief for millions Adjusting dietary and lifestyle choices is the first step toward healing
  • Pepsin | Description, Production, Function | Britannica
    Pepsin is a powerful enzyme in gastric juice that digests proteins such as those in meat, seeds, and dairy products It is the mature active form of pepsinogen, which is released into the stomach and mixed with hydrochloric acid to produce pepsin
  • What Is the Function of Pepsin and Why Is It Important?
    Pepsin is the primary protein-digesting enzyme in the human stomach, responsible for breaking dietary proteins into smaller fragments so they can be absorbed further along the digestive tract It works in an environment most enzymes would never survive: the powerfully acidic gastric fluid, with a pH between roughly 1 and 3 Beyond digestion, pepsin turns up in surprising medical contexts, from
  • What Is Pepsin and How Does It Affect Acid Reflux?
    Pepsin is the enzyme that causes most LPR damage — and PPIs don't touch it Here's the complete science-backed guide to what pepsin is, how it works, and how to reduce it
  • Pepsin: Signs You Need This Vital Enzyme and How to Get It - Dr. Axe
    Pepsin is a digestive enzyme in the stomach that breaks down proteins into smaller units It also helps with nutrient absorption, leaky gut and more
  • Pepsin - Health Encyclopedia
    Pepsin: A key digestive enzyme breaking down proteins in the stomach, vital for nutrient absorption in humans and animals Learn more about its role!
  • Pepsin - an overview | ScienceDirect Topics
    Pepsin is an endopeptidase with a broad specificity The pH optima for some protein substrates, such as cattle hemoglobin, are near pH 2 and are attributable to acid denaturation and solubility of substrates A pepsin assay is most commonly carried out at pH near 2 using cattle hemoglobin as a substrate





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