IGNOU runs a 1-year course called Diploma in Value Added Products from Fruits and Vegetables that costs Rs.10,600 to take. But the entire course material is available on its sister website eGyanKosh for free. You can register here and download any or all of the following courses here.
Courses & [number of files in each]
BPVI-001 Food Fundamentals [20]
BPVI-002 Horticultural Produce [25]
BPVI-003 Food Chemistry and Physiology [20]
BPVI-004 Food Processing and Engineering-I [21]
BPVI-005 Food Microbiology [19]
BPVI-006 Food Processing and Engineering-II [19]
BPVI-007 Food Quality Testing and Evaluation [18]
BPVI-008 Enterpreneurship and Marketing [27]
Also see other courses at School of Agriculture - IGNOU website (for info) or eGyanKosh (for course material)