Casamino Acids

Peptone is the general term for protein hydrolysates; tryptone is one specific kind, made from casein with trypsin, so its peptide profile and tryptophan content are more defined. When a formulation specifies tryptone, do not substitute another peptone directly, as growth and yield may differ.

Yes. Standard LB Miller is 10 g tryptone, 5 g yeast extract and 10 g sodium chloride per litre; Lennox reduces sodium chloride to 5 g. Adjust to pH 7.0 and autoclave. To save preparation time or ensure batch consistency, use our ready-made LB Broth powder instead.

The indole test checks whether a bacterium can break tryptophan down to indole. Tryptone is high in tryptophan compared with other peptones, so tryptone water or tryptone broth made from it supplies enough substrate for a clear reaction, which is why it is the standard nitrogen source for this test.

Tryptone is derived from milk casein, so it is a milk allergen and must be declared. It contains no meat, but as a dairy derivative it is not vegan; use soy or plant peptones for vegan formulations. For Halal requirements choose the certified version whose code ends in H.

Lactic acid bacteria. See the cultural response table and the specification sheet.

Yes. This is the standard version; a Halal certified version is also produced from food-grade raw materials with Halal documentation, for compliant sourcing in Malaysia, Indonesia, and the Middle East.

Yes. This product is available in 500 g, 5 kg, 25 kg. Tell us your application and volume when requesting a quotation; we reply within one working day and can supply the COA, specification sheet, and technical data sheet.