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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 is an aspartic protease having a catalytic aspartate in its active site [2] Pepsin is one of three endopeptidases (enzymes cleaving proteins in the middle) in the human digestive system, including chymotrypsin and trypsin
  • How to Neutralise Pepsin in the Throat: Every Method That Works
    Pepsin is a digestive enzyme produced in the stomach whose job is to break down proteins In the stomach it’s harmless — the stomach lining has protective mechanisms designed to handle it The problem starts when it travels somewhere it doesn’t belong For the full background, see what is pepsin
  • Rethinking Reflux: The Real Culprit Isn’t Acid—It’s Pepsin
    At-A-Glance The digestive enzyme pepsin, not acid, is the primary culprit behind reflux-related damage Unlike acid, pepsin sticks to tissues in the throat and airways, reactivating with acidic foods and causing long-term harm Many people with reflux don’t experience heartburn
  • 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
  • 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
  • What Is Pepsin and How Does It Affect Acid Reflux?
    Pepsin is a digestive enzyme produced exclusively in the stomach Its normal job is to break down dietary protein The problem begins when it travels out of the stomach via reflux: into the oesophagus in GERD, and into the throat, larynx, and beyond in LPR (silent reflux)
  • Pepsin - an overview | ScienceDirect Topics
    Pepsin is defined as a powerful enzyme present in gastric juice that aids in the digestion of complex food particles, produced from its proenzyme pepsinogen through reaction with hydrochloric acid (HCl) in the stomach
  • What Is the Function of Pepsin and Why Is It Important?
    Discover the indispensable role of pepsin, a fundamental enzyme crucial for efficient nutrient processing within your body
  • Physiology, Pepsin - PubMed
    Of these five components, pepsin is the principal enzyme involved in protein digestion It breaks down proteins into smaller peptides and amino acids that can be easily absorbed in the small intestine
  • Pepsin - Health Encyclopedia
    Pepsin is a digestive enzyme that plays a crucial role in the breakdown of proteins in the stomach It is one of the principal proteolytic enzymes in the digestive system of humans and many other animals





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