Keywords: آدامس; Brea gum; Lupine protein isolate; Bread; Acceptability; Storage time; Petroleum ether (PubChem CID: 241); Hydrochloric acid (PubChem CID: 14798); Sulfuric acid (PubChem CID: 1118); Red methyl (PubChem CID: 10303); Sodium hydroxide (PubChem CID: 14798);