Format

Send to

Choose Destination
J Agric Food Chem. 2018 Mar 21;66(11):2877-2890. doi: 10.1021/acs.jafc.7b05635. Epub 2018 Mar 1.

Effect of Abscission Zone Formation on Orange ( Citrus sinensis) Fruit/Juice Quality for Trees Affected by Huanglongbing (HLB).

Author information

1
USDA-ARS Horticultural Research Laboratory , Fort Pierce , Florida 34945 , United States.
2
Symrise AG , Teterboro , New Jersey 07608 , United States.
3
Southern Gardens Citrus Nursery LLC , Clewiston , Florida 33440 , United States.

Abstract

Orange trees affected by huanglongbing (HLB) exhibit excessive fruit drop, and fruit loosely attached to the tree may have inferior flavor. Fruit were collected from healthy and HLB-infected ( Candidatus liberibacter asiaticus) 'Hamlin' and 'Valencia' trees. Prior to harvest, the trees were shaken, fruit that dropped collected, tree-retained fruit harvested, and all fruit juiced. For chemical analyses, sugars and acids were generally lowest in HLB dropped (HLB-D) fruit juice compared to nonshaken healthy (H), healthy retained (H-R), and healthy dropped fruit (H-D) in early season (December) but not for the late season (January) 'Hamlin' or 'Valencia' except for sugar/acid ratio. The bitter limonoids, many flavonoids, and terpenoid volatiles were generally higher in HLB juice, especially HLB-D juice, compared to the other samples. The lower sugars, higher bitter limonoids, flavonoids, and terpenoid volatiles in HLB-D fruit, loosely attached to the tree, contributed to off-flavor, as was confirmed by sensory analyses.

KEYWORDS:

HLB; aroma volatiles; flavonoids; flavor; limonoids; qPCR; sensory

PMID:
29414241
DOI:
10.1021/acs.jafc.7b05635
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center