Document Detail


Quality characterization of celery (Apium graveolens L.) by plant zones and two harvest dates.
MedLine Citation:
PMID:  20722956     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to characterize the quality of celery petioles (Apium graveolens L. cv Golden Clause) from the external, middle, and internal zones of each plant. Harvest dates were 93 (HD1) and 124 (HD2) days after transplantation. Total weight (TW), total length (TL), total leaves number (LN), and petiole length of leaves (PL) for the 3 zones were measured. Physicochemical (color, b* and h; texture; total soluble solids, TSS; titratable acidity, TA; water content, WC), nutraceutical (ascorbic acid, AA; total quinones, TQ; browning potential, BP), and sensorial analysis (flavor, fibrosity, crunchiness) were done at harvest on petioles of each zone. No differences between harvesting dates were found in TW, TL, LN, and PL. Middle leaves had the highest PL. Harvest dates were not different in b*, h, TA, AA, and WC. Texture, TSS, BP, and TQ resulted higher in petioles of HD2 than in HD1. Similar TSS and TA were found in leaves of different plant zones. The yellow color of both external and internal zones was significantly higher than in the middle zone. The texture and BP was similar between the external and middle zones but the WC was lower in the external zone. Similarly, the AA content as well as the TQ was also lower than in the middle zone. Harvest delay improved the nutraceutical value in terms of BP and TQ, even though it also resulted in pithiness and fibrosity of the leaves. This study therefore suggests that the petioles of the middle zone when harvested at HD1 are the most suitable for consumption. Practical Application: Celery is a vegetable reduced in calories, has a high nutritional value and its fresh petioles are mainly consumed in salads. The texture and flavor are the most important attributes that define consumers' acceptability. As nutritional value, texture, and flavor may change with plant age and different zones of the plant, harvest date plays an important role on quality. Results indicate that harvest delay improved the nutraceutical value even though it also resulted in pithiness and fibrosity of the stalks. Petioles of the middle zone, when harvested at 93 d after transplanting, are the most suitable for consumers' consumption.
Authors:
Natalia Guerra; Liliana Carrozzi; María Gabriela Goñi; Sara Roura; Alejandra Yommi
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of food science     Volume:  75     ISSN:  1750-3841     ISO Abbreviation:  J. Food Sci.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-20     Completed Date:  2011-01-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0014052     Medline TA:  J Food Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  S327-32     Citation Subset:  IM    
Affiliation:
Insti. Nacional de Tecnología Agropecuaria, Balcarce, Argentina.
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MeSH Terms
Descriptor/Qualifier:
Apium graveolens / chemistry*,  growth & development*
Ascorbic Acid / analysis
Climate
Crops, Agricultural / chemistry*,  growth & development*
Humans
Maillard Reaction
Mechanical Phenomena
Physicochemical Phenomena
Pigmentation
Plant Leaves / growth & development*
Plant Stems / chemistry*,  growth & development*
Quality Control
Quinones / analysis
Sensation
Time Factors
Water / analysis
Chemical
Reg. No./Substance:
0/Quinones; 50-81-7/Ascorbic Acid; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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