It has been quite a week for French food giant Groupe Danone. An offer for Dutch nutrition group Royal Numico came just days after it agreed to sell its biscuits and cereals business to Kraft. In between times, rumours of PepsiCo's interest in Danone, also resurfaced. Has Danone done enough to strengthen its business and, at the same time, prevent itself from becoming a takeover target? Dean Best reports.