import re
rx = r"\b\d+/\d+/\d+.*?(?=\b\d+/\d+/\d+|$)"
s = "28/11/2016 Mushroom 05/12/2016 Carrot 12/12/2016 Broccoli 19/12/2016 Potato"
results = re.findall(rx, s)
print(results)
aW1wb3J0IHJlCnJ4ID0gciJcYlxkKy9cZCsvXGQrLio/KD89XGJcZCsvXGQrL1xkK3wkKSIKcyA9ICIyOC8xMS8yMDE2IE11c2hyb29tIDA1LzEyLzIwMTYgQ2Fycm90IDEyLzEyLzIwMTYgQnJvY2NvbGkgMTkvMTIvMjAxNiBQb3RhdG8iCnJlc3VsdHMgPSByZS5maW5kYWxsKHJ4LCBzKQpwcmludChyZXN1bHRzKQ==