Paper · 2025 · ACS Food Science & Technology

Coating Based on PVOH and Starch with Essential Oils of Citronella, Lemongrass, Cinnamon, and Thyme for Preserving Avocado (Persea americana Mill. cv. Hass)

Vanessa Caroline de Oliveira; Izadora Gomes Lopes; João Paulo Costa; et al.

9
claims
18
verbatim quotes
0
citations
4
research areas
✓
Open access · cc-by

Abstract

High Resolution Image Download MS PowerPoint Slide Avocado ( Persea americana Mill. cv. Hass) is highly perishable due to its elevated postharvest respiratory activity. This study investigated the efficacy of poly(vinyl alcohol) (PVOH) based edible coatings enriched with starch and essential oils (citronella, lemongrass, cinnamon, or thyme) in preserving avocado quality during cold storage over 29 days. Physicochemical parameters including mass loss, firmness, soluble solids, titratable acidity, ripening ratio, peel color, respiration rate, and fungal incidence were evaluated. PVOH coatings significantly reduced respiration rates and increased acidity, thereby delaying ripening. Incorporation of essential oils further enhanced preservation effects, with PVOH + citronella, PVOH + lemongrass, and PVOH + cinnamon treatments showing superior firmness retention. All essential oil formulations effectively delayed color changes and inhibited microbial growth compared to controls. The combined use of PVOH and essential oils proved particularly effective in maintaining postharvest quality, suggesting their potential as an ecofriendly alternative to conventional preservation methods for extending avocado shelf life while minimizing fungal deterioration.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PVOH coatings significantly reduced avocado respiration rates.

Taxon
AvocadoPersea americanat0
Treatment
PVOH coatingse0
Outcome
respiration ratese0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“PVOH coatings significantly reduced respiration rates and increased acidity, thereby delaying ripening”

✓ located verbatim in the source · abstract, characters 584–686 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PVOH coatings significantly increased acidity.

Taxon
AvocadoPersea americanat0
Treatment
PVOH coatingse0
Outcome
aciditye0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“PVOH coatings significantly reduced respiration rates and increased acidity, thereby delaying ripening”

✓ located verbatim in the source · abstract, characters 584–686 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PVOH coatings delayed ripening.

Taxon
AvocadoPersea americanat0
Treatment
PVOH coatingse0
Outcome
ripeninge0
Direction
delayinge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“PVOH coatings significantly reduced respiration rates and increased acidity, thereby delaying ripening”

✓ located verbatim in the source · abstract, characters 584–686 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PVOH plus citronella retained firmness better.

Taxon
AvocadoPersea americanat0
Treatment
PVOH + citronellae0
Outcome
firmness retentione0
Direction
superiore0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“PVOH + citronella, PVOH + lemongrass, and PVOH + cinnamon treatments showing superior firmness retention”

✓ located verbatim in the source · abstract, characters 764–868 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PVOH plus lemongrass retained firmness better.

Taxon
AvocadoPersea americanat0
Treatment
PVOH + lemongrasse0
Outcome
firmness retentione0
Direction
superiore0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“PVOH + citronella, PVOH + lemongrass, and PVOH + cinnamon treatments showing superior firmness retention”

✓ located verbatim in the source · abstract, characters 764–868 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PVOH plus cinnamon retained firmness better.

Taxon
AvocadoPersea americanat0
Treatment
PVOH + cinnamone0
Outcome
firmness retentione0
Direction
superiore0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“PVOH + citronella, PVOH + lemongrass, and PVOH + cinnamon treatments showing superior firmness retention”

✓ located verbatim in the source · abstract, characters 764–868 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Essential oil formulations delayed avocado color changes relative to controls.

Taxon
AvocadoPersea americanat0
Treatment
essential oil formulationse0
Outcome
color changese0
Direction
delayede0
Comparator
controlse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“All essential oil formulations effectively delayed color changes and inhibited microbial growth compared to controls”

✓ located verbatim in the source · abstract, characters 870–986 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Essential oil formulations inhibited microbial growth relative to controls.

Taxon
AvocadoPersea americanat0
Treatment
essential oil formulationse0
Outcome
microbial growthe0
Direction
inhibitede0
Comparator
controlse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“All essential oil formulations effectively delayed color changes and inhibited microbial growth compared to controls”

✓ located verbatim in the source · abstract, characters 870–986 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors proposed PVOH with essential oils to maintain postharvest quality and extend avocado shelf life.

Taxon
AvocadoPersea americanat0
Treatment
PVOH and essential oilse0
Outcome
extending avocado shelf lifee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Avocado ( Persea americana Mill. cv. Hass)”

✓ located verbatim in the source · abstract, characters 51–93 · show in text ↑
e0

“The combined use of PVOH and essential oils proved particularly effective in maintaining postharvest quality, suggesting their potential as an ecofriendly alternative to conventional preservation methods for extending avocado shelf life while minimizing fungal deterioration”

✓ located verbatim in the source · abstract, characters 988–1262 · show in text ↑

Cymbopogon citratus · quality: postharvest · Persea americana (avocado)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

botanical · quality: postharvest · Persea americana (avocado)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

4 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

botanical · growth · Persea americana (avocado)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.