摘要或動機

由於本身有頭皮屑的煩惱，在使用各種洗髮精之後，一方面覺得大部分的洗髮精效果不是很好，另一方面也擔心抗屑洗髮精的成分對人體有害。所以有了研究頭皮屑的念頭，希望能找出減少頭皮屑的方法。\r
在與幾位皮膚科專門醫師討論後，醫師們都不建議在直接人體上進行減少頭皮屑的實驗。於是我們將研究的重點放在〝皮屑芽孢菌生長之探討〞，希望對皮屑芽孢菌有更深入的瞭解。除了洗髮精之外，我們也將研究各種廣為流傳的民間偏方是否能有效抑制皮屑芽孢菌生長。在這些民間偏方的蒐集可兩大類：一類是在日常生活中可以很容易取得的物質，如鹽、醋、大蒜、生薑、洋蔥等；另一類則是台灣特有的物質，如無患子、茶籽粉、竹醋液等。\r
我們希望透過研究方法能瞭解\r
(一) 溫度、濕度、酸鹼度、油脂對皮屑芽孢菌生長的影響\r
(二) 哪些物質可以抑制皮屑芽孢菌的生長\r
(三) 不同稀釋濃度的物質抑制皮屑芽孢菌的生長的效果\r
為了避免繁複的數量計算(如菌數計算)，我們採用較多的對照比較(如抑制圈大小)。同時，我們設計了一個簡易的觀察與測量方法(稀釋法與抑菌指數)，來比較各種民間偏方\r
的抑菌效果。\r
研究與實驗分為四大項進行:\r
(一) 基本生長環境之探討：溫度、濕度、酸鹼度、油脂對皮屑芽孢菌生長的影響\r
(二) 民間偏方抑制效果之探討：鹽、醋、大蒜、生薑、洋蔥是否能抑制抑制皮屑芽孢菌的生長\r
(三) 民間偏方抑制效果之比較(抑制圈)：比較各種物質的抑制圈大小\r
(四) 民間偏方抑制效果之比較(稀釋法)：利用抑菌指數來比較各種物質的抑菌能力\r
經過研究，我們所蒐集到的民間偏方都有某種程度的抑菌效果，大致可以分為強效(蒜液、竹醋液、茶樹精油)、有效(食鹽水、食用醋、洋蔥液、檜木芬多精、茶籽粉)及普通(薑汁、無患子)三種效果。\r
\r
Since I have the serious dandruff problem, I try to seek, except the shampoo, the natural materials to decrease the dandruff. After consulting with some dermatologists, they suggest I can focus my research on the “Malassezia Furfur”, which is the major bacteria causing the dandruff.\r
This project is designed for finding the materials which have the most powerful inhibition capability for the “Malassezia Furfur”. I collect some folk prescriptions from the internet that salt, vinegar, garlic and onion can decrease the dandruff. The problem is “Do they have good inhibition capability for the Malassezia Furfur too?”\r
The goals of the research are as followed.\r
(1) The exploration of the basic environmental factors for the growth of Malassezia Furfur, such as temperature, humidity, acidity & alkalinity.\r
(2) What kinds of material have the good inhibition capability?\r
(3) The comparison of inhibition capability of the different material with different consistency.\r
We especially design a method called “Dilution metering and index” to compare the inhibition capability of the different material. By using very simple observation, this method will transfer the simple “Qualitative Analysis” to the result of complicated “Quantitative Analysis”. The “Dilution metering and index” is the major achievement of this project, and it is also the good way for the projects which are not equipped with the precision instrument for bacteria inhibition capability measurement.