Gallery displayed as plain text in post_content

Hi all,

I’ve made a script where I get all the posts from a category and display this posts, I’m not inside “the loop”. My posts contain gallery’s and when I display the post_content I see the gallery as plain text.

$args = array(
    'category'  => '2',
    'orderby'   => 'post_date',
    'order'      => 'DESC'
);
$posts = get_posts($args);

foreach ($posts as $post) {
    echo '<div class="content">' . $post->post_content.'</div>';
}

But I only want to display the real content, not the gallery in plain text as seen in this image.

Someone who can help me out with this problem? Thanks!