阅读葡萄牙语rss并存储在数据库中的文本问题

Question

I am trying to read an rss feed which data is written in Portuguese language.

What I want

1. I read rss
2. Storing title and description in variables
3. Then storing those variables in MYSQL using insert query

But when data inserting in database then some texts are in bad format

for example the actual title in rss feed is

 problema com funções

but when store in my database then it store as following

 problema com funções

I am using following code

 $title=trim(htmlentities($title, ENT_QUOTES, "UTF-8"));

Same happening with description too. also I want to remove html tags also from description.

Anybody can help me?

thanks in advance