两种评价牙膏预防外源性色素沉积功效方法的比较

doi:10.3969/j.issn.1001-1803.2020.12.010

日用化学工业 ›› 2020, Vol. 50 ›› Issue (12): 875-878.doi: 10.3969/j.issn.1001-1803.2020.12.010

两种评价牙膏预防外源性色素沉积功效方法的比较

谢宇(),李慧怡,周悦,叶蓉姿,谢嘉颖,谭建华()

广州质量监督检测研究院,广东广州 511447

收稿日期:2020-03-20 修回日期:2020-11-20 出版日期:2020-12-22 发布日期:2020-12-22
通讯作者: 谭建华
作者简介:谢宇（1992-）,助理工程师,硕士,E-mail： 545164188@qq.com。

Comparison of two methods for evaluating the toothpastes on the efficacy of prevention of extrinsic staining

XIE Yu(),LI Hui-yi,ZHOU Yue,YE Rong-zi,XIE Jia-ying,TAN Jian-hua()

Guangzhou Quality Supervision and Testing Institute, Guangzhou, Guangdong 511447, China

Received:2020-03-20 Revised:2020-11-20 Online:2020-12-22 Published:2020-12-22
Contact: Jian-hua TAN

摘要/Abstract

摘要：

分别采用紫外吸收光谱法和色差法评价了5款市售牙膏预防外源性色素沉积功效,并结合牙膏中植酸钠、三聚磷酸钠、焦磷酸钠3种功效成分的总含量对比分析了两种功效评价方法的差异。结果显示,紫外吸收光谱法与色差法所得5款牙膏预防外源性色素沉积功效高低结论相近,且与牙膏中植酸钠、三聚磷酸钠、焦磷酸钠的总含量高低呈正相关。同时,该研究尝试采用相关性分析和组内相关系数检验对两种评价方法的结果间等价性进行了初步分析。结果显示,两种评价方法的结果间存在中度正相关关系,R²=0.725;组内相关系数ICC值为0.852 （P<0.05）,提示两种方法测量结果从统计学角度可认为有等价性。

关键词: 牙膏, 预防, 外源性色素, 紫外吸收光谱法, 色差法, 组内相关系数

Abstract:

The efficacy of prevention of extrinsic staining were evaluated for 5 commercial toothpastes by two methods, i.e., UV-Vis absorption spectrometry and colorimetric method. Combined with the quantities of sodium phytate, sodium tripolyphosphate and sodium pyrophosphate in each toothpaste, the differences between the results of the two methods were compared. The results showed that, similar rankings among the 5 toothpastes are obtained for the two methods in evaluating the efficacy of prevention of extrinsic staining; in addition, the total quantity of the three active ingredients （i.e., sodium phytate, sodium tripolyphosphate and sodium pyrophosphate） is positively correlated with the efficacy of prevention of extrinsic staining. Furthermore, pearson correlation coefficient and intra-class correlation coefficients （ICC） were used to analyze the preliminary results obtained from the two methods. In conclusion, moderate positive correlation was found between the two results, i.e., R²=0.725; moreover, ICC=0.852 （P<0.05）, indicating that the results of UV-Vis absorption spectrometry and colorimetric method were statistically consistent.

Key words: toothpaste, prevention, extrinsic stain, UV-Vis absorption spectrometry, colorimetric method, ICC

中图分类号:

TQ658

谢宇,李慧怡,周悦,叶蓉姿,谢嘉颖,谭建华. 两种评价牙膏预防外源性色素沉积功效方法的比较[J]. 日用化学工业, 2020, 50(12): 875-878.

XIE Yu,LI Hui-yi,ZHOU Yue,YE Rong-zi,XIE Jia-ying,TAN Jian-hua. Comparison of two methods for evaluating the toothpastes on the efficacy of prevention of extrinsic staining[J]. China Surfactant Detergent & Cosmetics, 2020, 50(12): 875-878.

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分组	无效（L）对照组	高效（H）对照组	实验组
分组	无效（L）对照组	高效（H）对照组	牙膏A	牙膏B	牙膏C	牙膏D	牙膏E
吸光度	0.115 0	0.900 5	0.099 2	1.004 0	0.876 3	0.516 7	0.608 3
E/%	/	/	102.01	-13.18	3.08	48.86	37.20

分组	实验组
分组	牙膏A	牙膏B	牙膏C	牙膏D	牙膏E
L*平均值	84.19	72.76	74.36	82.69	84.23

	w/%
	牙膏A	牙膏B	牙膏C	牙膏D	牙膏E
植酸钠	0.15	0	0	0.11	0.14
焦磷酸钠	4.15	0.20	0.31	1.11	1.19
三聚磷酸钠	0.14	0	0	0	0

	实验组					ICC值	P值
	牙膏A	牙膏B	牙膏C	牙膏D	牙膏E	ICC值	P值
标准化E/%	1.69	-1.17	-0.76	0.37	0.08	0.852	0.016
标准化L*	0.97	-1.02	-0.98	0.69	1.04	0.852	0.016

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两种评价牙膏预防外源性色素沉积功效方法的比较

Comparison of two methods for evaluating the toothpastes on the efficacy of prevention of extrinsic staining

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