Patent GB-218679-A (GB)
Title: The manufacture and extraction of nitrogenous products from products of vegetable origin and especially yeast
IPC: A23J3/30
Filed: 1924-07-04
Abstract: Yeast or other substances of vegetable origin are subjected to autolysis or to the action of proteolytic ferments in presence of small quantities of antiseptic substances which may be hydrocarbons such as benzene, toluenes or xylenes or homologues, halogen derivatives such as chloroform, carbon tetrachloride, di-, or tri-chlorethylene, tetrachloracetylene, pentachlorethane, dichlorethanes, propyl, propylene, butyl or butylene chlorides or homologues, chloro- or bromo-benzenes, benzyl chlorides or bromides and nitrated derivatives and homologues, higher alcohols such as butyl or amyl alcohol, sulphur derivatives such as carbon bisulphide, thiocarbonates, mercaptans, fatty sulphides, sulphuretted mineral oils, isosulphocyanic esters, aldehydes such as formaldehyde and its products of condensation with ammonia, hexamethylenetetramine, acetaldehyde, chloral, acrolein, croton aldehyde, or furfural, ketones, phenol and cresol or their homologues and halogen or nitrated derivatives, aniline or quinoline or their homologues or crude mixtures derived from tar distillation products.  In treating yeast in presence of carbon tetrachloride, the mixture is maintained at a temperature favourable to digestion.  The liquid product obtained after about 15 days is filtered and may be decolorized with tannin or animal black.  The product is dried in an air current to remove carbon tetrachloride, and forms a paste suitable for making soups, or may be dried to a powder.  In treating some vegetable materials fatty bodies are obtained as a by-product.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of soluble alkali or alkaline-earth fluorides or bromides as antiseptic substances.  This subject-matter does not appear in the Specification as accepted.  Reference has been directed by the Comptroller to Specifications 15145/97 and 18714/97, [both in Class 49, Food &c.].ALSO:Yeast or other substances of vegetable origin are subjected to autolysis or to the action of proteolytic ferments in presence of small quantities of antiseptic substances which may be hydrocarbons such as benzene, toluenes, or xylenes or homologues, halogen derivatives such as chloroform, carbon tetrachloride, di-, or tri-chlorethylene, tetrachloracetylene, pentachlorethane, dichlorethanes, propyl, propylene, butyl or butylene chlorides or homologues, chloro- or bromo-benzenes, benzyl chlorides or bromides and nitrated derivatives and homologues, higher alcohols such as butyl or amyl alcohol, sulphur derivatives such as carbon bisulphide, thiocarbonates, mercaptans, fatty sulphides, sulphuretted mineral oils, isosulphocyanic esters, aldehydes such as formaldehyde and its products of condensation with ammonia, hexamethylenetetramine, acetaldehyde, chloral, acrolein, croton aldehyde, or furfurol, ketones, phenol cresol or their homologues and halogen, or nitrated derivatives, aniline or quinoline or their homologues, or crude mixtures derived from tar distillation products. In treating yeast in presence of carbon tetrachloride, the mixture is maintained at a temperature favourable to digestion.  The liquid product obtained after about 15 days is filtered and may be decolorized with tannin or animal black.  The product is dried in an air current to remove carbon tetrachloride, and forms a paste suitable for making soups, or may be dried to a powder.  In treating some vegetable materials fatty bodies are obtained as a by-product. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of soluble alkali or alkaline-earth fluorides or bromides as antiseptic substances.  This subject-matter does not appear in the Specification as accepted.  Reference has been directed by the Comptroller to Specifications 15145/97 and 18714/97, [both in Class 49, Food &c.].