7/31/2019 2012 ASHS Poster

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Shelf Life and Composition of Organically Grown North Carolina Blackberries

1Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695; 2Plants for Human HealthInstitute, NC Research Campus, North Carolina State University, Kannapolis, NC 28081

Moo Jung Kim 1, Penelope Perkins-Veazie 2, and Gina Fernandez 1

Introduction

Materials and methods

Conclusions

References

Objectives

Establish the postharvest life of organically grown blackberriesEvaluate the effects of storage conditions on phytochemical properties

of organically grown fresh blackberries

Plant materials- Organically grown Natchez, Ouachita, and Navaho blackberries - Shiny black (SB) and dull black (DB) ripeness stages.

Storage conditions- Consistently at 1 oC for 15 days (CL, constant low) or at 1 oC for 13 daysand at 20 oC for the subsequent two days (RT, retail)

Measurement and analysis- Weight loss, leakage, decay incidence, red drupelets, softness, andoverall rating after storage

- Soluble solid content (SSC), titratable acidity (TA), total anthocyanin andphenolic contents, and antioxidant activity (FRAP) at 0 and 15 days after storage

Results

Table 1. Subjective rating (leakage, decay incidence, softness, and overall rating)and composition (SSC and TA) of Natchez, Ouachita, and Navahoblackberries after 15 days of storage

xSoftness = berries rated 4 or 5

y100% - (average of percent leakage, decay, and softness) (Perkins-Veazie et al., 1999)Means separated within storage conditions (letters) and between ripeness stage (*) using t-test,p