{"title":"Cold-pressed tiger nut (Cyperus esculentus L.) oils: chemical and aromatic profiles, sensory properties, and consumer preferences","authors":"E. Keskin Uslu, E. Yılmaz","doi":"10.3989/gya.0982221","DOIUrl":null,"url":null,"abstract":"In this study, tiger nut oils produced by cold pressing were characterized by means of physicochemical, compositional, and sensory analyses. The major fatty acids were oleic (70.4%), palmitic (13.3%), and linoleic (11.9%) acids. The main sterols were β-sitosterol and stigmasterol (58.3 and 20.5 mg/100 g), and the main tocopherol was α-tocopherol (234.78 μg/g). Syringic acid, apigenin and vanillin were the major phenolic compounds quantified. The cold-pressed oils crystallized at -9.12 °C and melted at -1.87 °C. A sensory panel described the oil with 5 sensory descriptive (almond, nutty, roasted, straw, sweety, soil) terms. A consumer test indicated that appearance, smell/aroma, and taste/flavor scores were above 4.0 on a 5-point hedonic scale. In conclusion, tiger nut oils with retained nutrients and specific aroma could be produced by the cold-pressing technique. Further studies for food and functional food applications of this gourmet oil are anticipated.","PeriodicalId":12839,"journal":{"name":"Grasas y Aceites","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Grasas y Aceites","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.3989/gya.0982221","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, tiger nut oils produced by cold pressing were characterized by means of physicochemical, compositional, and sensory analyses. The major fatty acids were oleic (70.4%), palmitic (13.3%), and linoleic (11.9%) acids. The main sterols were β-sitosterol and stigmasterol (58.3 and 20.5 mg/100 g), and the main tocopherol was α-tocopherol (234.78 μg/g). Syringic acid, apigenin and vanillin were the major phenolic compounds quantified. The cold-pressed oils crystallized at -9.12 °C and melted at -1.87 °C. A sensory panel described the oil with 5 sensory descriptive (almond, nutty, roasted, straw, sweety, soil) terms. A consumer test indicated that appearance, smell/aroma, and taste/flavor scores were above 4.0 on a 5-point hedonic scale. In conclusion, tiger nut oils with retained nutrients and specific aroma could be produced by the cold-pressing technique. Further studies for food and functional food applications of this gourmet oil are anticipated.
期刊介绍：
Grasas y Aceites is a peer-reviewed journal devoted to the publication of original articles concerning the broad field of lipids, especially edible fats and oils from different origins, including non acyl lipids from microbial origin relevant to the food industry. It publishes full research articles, research notes, reviews as well as information on references, patents, and books.
Grasas y Aceites publishes original articles on basic or practical research, as well as review articles on lipid related topics in food science and technology, biology, (bio)chemistry, medical science, nutrition, (bio)technology, processing and engineering. Topics at the interface of basic research and applications are encouraged. Manuscripts related to by-products from the oil industry and the handling and treatment of the wastewaters are also welcomed.
Topics of special interest to Grasas y Aceites are:
-Lipid analysis, including sensory analysis
-Oleochemistry, including lipase modified lipids
-Biochemistry and molecular biology of lipids, including genetically modified oil crops and micro-organisms
-Lipids in health and disease, including functional foods and clinical studies
-Technical aspects of oil extraction and refining
-Processing and storage of oleaginous fruit, especially olive pickling
-Agricultural practices in oil crops, when affecting oil yield or quality
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