Seasoning Chinese cooking pans: The nanoscience behind the Kitchen God's blessing

IF 9.9 2区 材料科学 Q1 Engineering
Chenxi Gao , Na Yang , Cunpu Li , Xi Wang , Xun Yu , Ling Zhang , Zidong Wei
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引用次数: 0

Abstract

The Chinese iron pan can function as a nonstick pan even without a polytetrafluoroethylene (PTFE) coating after a “Kitchen God blessing” seasoning process. We simulate this process and disclose the science behind the “Kitchen God blessing,” finding that through repeated oil-coating and heating, the reversible insertion and extraction of oxygen atoms split the surface of the iron pan, gradually producing Fe3O4 nanoballs. These balls give the iron pan a conditional hydrophobicity property, meaning the pan would be hydrophilic when the ingredients contain much water and hydrophobic when they contain less water. The former enables heat to be transferred rapidly through the nanoballs while the latter slows down the heat transference and prevents the pan from sticking. This discovery provides an approach of generating nanoballs on the surface of the metal and also discloses the secret of the fantastic taste produced by cooking with a Chinese iron pan.

给中国烹饪锅调味:灶神祝福背后的纳米科学
经过“灶神保佑”的调味过程,即使没有聚四氟乙烯(PTFE)涂层,中国铁锅也可以起到不粘锅的作用。我们模拟了这一过程,揭示了“灶神保佑”背后的科学,发现通过反复涂油和加热,氧原子的可逆插入和提取分裂了铁锅表面,逐渐产生了Fe3O4纳米球。这些球使铁锅具有条件疏水性,这意味着当成分含有大量水时,铁锅将是亲水的,而当成分含有较少水时,则是疏水的。前者使热量能够通过纳米球快速传递,而后者减缓了热量传递并防止锅粘在一起。这一发现提供了一种在金属表面产生纳米球的方法,也揭示了用中国铁锅烹饪产生美妙味道的秘密。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Nano Materials Science
Nano Materials Science Engineering-Mechanics of Materials
CiteScore
20.90
自引率
3.00%
发文量
294
审稿时长
9 weeks
期刊介绍: Nano Materials Science (NMS) is an international and interdisciplinary, open access, scholarly journal. NMS publishes peer-reviewed original articles and reviews on nanoscale material science and nanometer devices, with topics encompassing preparation and processing; high-throughput characterization; material performance evaluation and application of material characteristics such as the microstructure and properties of one-dimensional, two-dimensional, and three-dimensional nanostructured and nanofunctional materials; design, preparation, and processing techniques; and performance evaluation technology and nanometer device applications.
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