University of California

Fruit Ripening & Ethylene Management

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Our next Fruit Ripening & Ethylene Management Hybrid Workshop is scheduled for March 7-9, 2023.


2022 Fruit Ripening & Ethylene Management Workshop Recap

Our first hybrid workshop, April 5-6, 2022, was a big success! Participants and instructors attended from all over the world in person and virtually. Instructors shared their research and knowledge on how to deliver delicious fruits and fruit-vegetables to consumers and increase profits by reducing losses at the receiving end.


Course Information

Our two-day Fruit Ripening & Ethylene Management Workshop focuses on how to increase profits by reducing losses at the receiving end, and delivering delicious, ready-to-eat fruits and fruit-vegetables to the consumer. This workshop features lectures, demonstrations and post-session Q&As. In-person participants are served lunch and snacks.


Who attended our April 2022 hybrid workshop?

Shippers, wholesale and retail fruit handlers, and produce managers who are involved in handling and ripening fruits and fruit-vegetables all benefited from this workshop. Participants can also earn credits toward completion of the Produce Professional Certificate by completing this workshop.


Here's what some of our workshop participants had to say about the experience!

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2022 Promotional Videos


Workshop Topics

  • Importance of ripening programs
  • Ripening fruit and fruit-vegetables
  • Ripening facilities & equipment
  • Fruit development-ripening
  • Maturity and quality relationships
  • Biology of ethylene production
  • Sensory quality attributes and measurement
  • Temperature management
  • Retail temperature storage conditions
  • Retail displays and handling
  • Demonstrations
  • Tools to control ripening and senescence
  • Ethylene inhibition and control
  • Designing/controlling a ripening program
  • Physiological disorders and other losses


  • Sensory
  • Quality measurements
  • Environmental equipment



Mary Lu Arpaia, Ph.D., Coordinator

Mary Lu Arpaia
I'm an extension specialist for subtropical fruit with educational and research programs addressing citrus and avocado postharvest handling. I conduct research in two areas of subtropical fruit postharvest handling, including:


  • The role of preharvest management on postharvest fruit quality. A clearer understanding of orchard management’s role is needed to optimize the postharvest life of subtropical fruits. I collaborate in multi-disciplinary projects that examine the role of irrigation, fertilization, plant growth regulators, and pest management on postharvest fruit quality.
  • The response of subtropical fruit to the postharvest environment, including temperature during handling and ethylene exposure. As part of this research effort we have incorporated the use of sensory science procedures to study the impact of handling practices on eating quality.



Workshop Content Information

Mary Lu Arpaia Ph.D.
Title: Cooperative Extension Specialist
Phone: (559) 646-6561


2022 Price Chart

Fruit Ripening Course April 2022


Refund Policy

Refund requests received via email on or before March 31, 2022 will be granted less a $90 USD administrative fee. Registration substitutions or transfers must be requested before March 31, 2022 and approved by the course administrator. In the event that this workshop is canceled or postponed, the UC Postharvest Technology Center will fully refund registration fees. Please contact Pam Devine at for more information.


Image Release

By registering for this workshop, I grant the UC Postharvest Technology Center (PTC) permission to capture or record my image, video, and audio footage at PTC-sponsored events without payment, rights to royalties, or other compensation. I understand that images and video footage will be edited, copied, and shared with an audience for educational and/or promotional purposes and will not be accessible to the public or modified for commercial distribution. Media captured may be used to support the development of PTC's online learning curriculum, auxiliary PTC educational dissemination, and PTC promotion.


Workshop Registration Information

Pam Devine
Title: Administrative Officer
Phone: 530-752-6941



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