Abstract: One embodiment of the present invention is directed to methods for obtaining limonoid A-ring lactone acid salts, limonoid glycoside monocarboxylic acids, limonoid glycoside dicarboxylic acids, limonoid glycoside monocarboxylic acid salts, and limonoid glycoside dicarboxylic acid salts from Citrus fruit, fruit parts or extracts, and processing by-products. In one embodiments the methods are practiced on a production scale. In another embodiment the invention is directed to products obtained by the methods. In still another embodiment the invention provides pharmaceutical and nutraceutical compositions comprising isolated pure limonoid compounds.