Improving Quality of
February 25, 1997
Fresh-cut carrots that go for a dip in a calcium chloride solution stay firm
and crisp and are less likely to carry potentially harmful microorganisms,
scientists with USDAs
Agricultural Research Service say.
ARS scientists collaborated with Japanese researchers in testing calcium
chlorides ability to protect cut carrots. The calcium chloride treatment
also worked well on cut zucchini squash, which is highly perishable and very
sensitive to cold temperatures.
Maintaining and improving quality of fresh-cut produce is a major challenge
in the fast- growing market for fresh fruits and vegetables. The produce
industry now uses a chlorine solution to control microorganisms on cut produce,
but it isnt always effective.
For maximum quality, fresh-cut produce should be handled and stored at or
near 32 degrees F if the product is not sensitive to chilling injury, the ARS
scientists say. Many processors now prepare, ship, and store fresh-cuts at 41
degrees or even 50 degrees F.
Sales of fresh-cut produce in the United States are projected to increase
from $5.8 billion in 1994 to $19 billion in 1999.
The complete story on protecting quality of vegetable cutups is
available in the January issue of Agricultural Research magazine,
the monthly publication of the Agricultural Research Service.
Scientific contact: Scientific contact:
Alley E. Watada,
USDA-ARS Horticultural Crops
Quality Laboratory, Beltsville, Md., phone (301) 504-6128, e-mail