Pineapple ripened or off-green. A plant growth regulator, Ethephon, is typically sprayed onto the fruit one week before harvest, developing ethylene, which turns the fruit golden yellow. After cleaning and slicing, a pineapple is typically canned in sugar syrup with added preservative. A pineapple never becomes any riper than it was when harvested. The fruit itself is quite perishable and if it is stored at room temperature, it should be used within two days; however, if it is refrigerated, the time span extends to 5–7 days. Mimi Sheller writes: "The pineapple entered European iconography as a symbol of welcome and hospitality,
Swiss Institute for Management and Hospitality Kantonstrasse 85, 6353 Weggis to all of level 4 of the building which is situated by the shore of Lake Lucerne. After each semester students are given the opportunity to work for 4–6 months in the hospitality industry. SWISS IM&H offers diplomas up to an MBA to students from the age of 18. British Hospitality Association (BHA), American Hotel & Lodging Educational Institute (AH&LA), International and Euro CHRIE, West Coast University (WCU), International University of Business Agriculture and technology (IUBAT) have signed agreements of collaboration with SWISS IM&H in 2012. It offers Undergraduate Programs in Culinary Management and Hospitality Management,