title: Enzymatic interesterification of palm stearin with Cinnamomum camphora seed oil to produce zero-trans medium-chain triacylglycerols-enriched plastic fat.
abstract: It is known that Cinnamomum camphora seed oil (CCSO) is rich in medium-chain fatty acids (MCFAs) or medium-chain triacylglycerols (MCTs). The purpose of the present study was to produce zero-trans MCTs-enriched plastic fat from a lipid mixture (500 g) of palm stearin (PS) and CCSO at 3 weight ratios (PS:CCSO 60:40, 70:30, 80:20, wt/wt) by using lipase (Lipozyme TL IM, 10% of total substrate) as a catalyst at 65 °C for 8 h. The major fatty acids of the products were palmitic acid (C16:0, 42.68% to 53.42%), oleic acid (C18:1, 22.41% to 23.46%), and MCFAs (8.67% to 18.73%). Alpha-tocopherol (0.48 to 2.51 mg/100 g), γ-tocopherol (1.70 to 3.88 mg/100 g), and δ-tocopherol (2.08 to 3.95 mg/100 g) were detected in the interesterified products. The physical properties including solid fat content (SFC), slip melting point (SMP), and crystal polymorphism of the products were evaluated for possible application in shortening or margarine. Results showed that the SFCs of interesterified products at 25 °C were 9% (60:40, PS:CCSO), 18.50% (70:30, PS:CCSO), and 29.2% (80:20, PS:CCSO), respectively. The β' crystal form was found in most of the interesterified products. Furthermore, no trans fatty acids were detected in the products. Such zero-trans MCT-enriched fats may have a potential functionality for shortenings and margarines which may become a new type of nutritional plastic fat for daily diet.
authors.affiliation: State Key Laboratory of Food Science and Technology, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Tang
authors.forename: Jiang-ning
authors.initials: JN
authors.lastname: Hu
authors.forename: Xue-mei
authors.initials: XM
authors.lastname: Zhu
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Luo
authors.forename: Lin
authors.initials: L
authors.lastname: Lei
authors.forename: Ze-yuan
authors.initials: ZY
authors.lastname: Deng
authors.forename: Ki-Teak
authors.initials: KT
authors.lastname: Lee
mesh_terms: D001203:Ascomycota / Q000201:enzymology; D055598:Chemical Phenomena; D002681:China; D002851:Chromatography, High Pressure Liquid; D027423:Cinnamomum camphora / Q000737:chemistry*; D004041:Dietary Fats / Q000009:adverse effects / Q000032:analysis*; D004800:Enzymes, Immobilized / Q000378:metabolism; D004951:Esterification; D005232:Fatty Acids, Volatile / Q000032:analysis / Q000737:chemistry; D005656:Fungal Proteins / Q000378:metabolism; D008049:Lipase / Q000378:metabolism; D008383:Margarine / Q000009:adverse effects / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry* / Q000378:metabolism; D010938:Plant Oils / Q000737:chemistry* / Q000378:metabolism; D012639:Seeds / Q000737:chemistry*; D013237:Stereoisomerism; D044242:Trans Fatty Acids / Q000009:adverse effects / Q000032:analysis / Q000737:chemistry; D044366:Transition Temperature; D014280:Triglycerides / Q000009:adverse effects / Q000737:chemistry* / Q000378:metabolism; D014961:X-Ray Diffraction
chemical_list: D004041:Dietary Fats; D004800:Enzymes, Immobilized; D005232:Fatty Acids, Volatile; D005656:Fungal Proteins; D010936:Plant Extracts; D010938:Plant Oils; D044242:Trans Fatty Acids; D014280:Triglycerides; D008383:Margarine; C093666:Lipozyme; D008049:Lipase