DL-Alanine
The defining feature of a direct food preservative is its ability to target and inhibit the metabolic processes or structural integrity of microorganisms (e.g., disrupting bacterial cell membranes, inhibiting enzyme activity for mold growth). DL-Alanine, as an α-amino acid, does not possess this targeted antimicrobial effect:
- It cannot directly kill or suppress the growth of common food spoilage microorganisms (e.g.,Bacillus subtilis,Aspergillus niger,Saccharomyces cerevisiae) at the low addition levels typically used in food (0.1%–1%, far below concentrations that might have weak antimicrobial effects).
- Unlike Nisin (which targets Gram-positive bacteria) or sodium benzoate (which disrupts microbial acid-base balance), DL-Alanine does not interfere with microbial physiology under normal food processing and storage conditions.
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L-Lysine monohydrochloride |
L-Lysine monohydrochloridehas a higher aqueous solubility than free L-lysine: ~70 g/100 mL at 25 °C (vs. ~63 g/100 mL for free L-lysine), with ... |
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DL-Methionine |
DL-Methionine, chemically namedDL-2-amino-4-(methylthio)butanoic acid, is a racemic mixture composed of equimolar amounts of L-methionine and D-met... |
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DL-Alanine |
DL-Alanine is not a direct, primary food preservative like traditional preservatives (e.g., Nisin, sodium benzoate, potassium sorbate) whose core f... |
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L-Lysine monohydrochloride |
Density and Refractive Index of L-Lysine monohydrochlorideBulk density: 0.6–0.8 g/cm³ (crystalline powder); tap density: 0.8–1.0 g... |
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L-proline |
The basic information of L-proline1. Chemical structureMolecular formula: C₅H₉NO₂Molecular weight: 115.13 g/molStructural features: The α -am... |
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