Cyclodextrins enhance the antioxidant activity of essential oils from three lamiaceae species

Patrícia Costa; Bruno Medronho; Sandra Gonçalves; Anabela Romano

doi:10.1016/j.indcrop.2015.03.065

Cyclodextrins enhance the antioxidant activity of essential oils from three lamiaceae species

Patrícia Costa, Bruno Medronho, Sandra Gonçalves, Anabela Romano^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

In the present study, the effect of β-cyclodextrin (β-CD) and 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) on the antioxidant activity and storage stability of the essential oils (EOs) from Lavandula viridis, Lavandula pedunculata subsp. lusitanica and Thymus lotocephalus (Lamiaceae) was investigated. The presence of both cyclodextrins (CDs) was found to produce a remarkable enhancement on the antioxidant activity as assessed by the oxygen radical absorbance capacity (ORAC) assay. The highest free radical-scavenging effect was observed in the EO from T. lotocephalus, particularly at the highest concentration of HP-β-CD (i.e., 1900μmol_TE/g_EO). Moreover, the antioxidant activity of the EO/HP-β-CD complexes was found to be considerably stable over 30 days, at 4°C, possibly due to the higher solubility of the modified β-CD. The results obtained suggest that these systems can be a very interesting alternative as a natural source of antioxidants for different applications such as in the food preservation field.

Original language	English
Pages (from-to)	341-346
Number of pages	6
Journal	Industrial Crops and Products
Volume	70
DOIs	https://doi.org/10.1016/j.indcrop.2015.03.065
Publication status	Published - 1 Aug 2015
Externally published	Yes

Keywords

Antioxidant activity
Cyclodextrins
Essential oils
Lavandula pedunculata
Lavandula viridis
Thymus lotocephalus

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.indcrop.2015.03.065

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title = "Cyclodextrins enhance the antioxidant activity of essential oils from three lamiaceae species",

abstract = "In the present study, the effect of β-cyclodextrin (β-CD) and 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) on the antioxidant activity and storage stability of the essential oils (EOs) from Lavandula viridis, Lavandula pedunculata subsp. lusitanica and Thymus lotocephalus (Lamiaceae) was investigated. The presence of both cyclodextrins (CDs) was found to produce a remarkable enhancement on the antioxidant activity as assessed by the oxygen radical absorbance capacity (ORAC) assay. The highest free radical-scavenging effect was observed in the EO from T. lotocephalus, particularly at the highest concentration of HP-β-CD (i.e., 1900μmolTE/gEO). Moreover, the antioxidant activity of the EO/HP-β-CD complexes was found to be considerably stable over 30 days, at 4°C, possibly due to the higher solubility of the modified β-CD. The results obtained suggest that these systems can be a very interesting alternative as a natural source of antioxidants for different applications such as in the food preservation field.",

keywords = "Antioxidant activity, Cyclodextrins, Essential oils, Lavandula pedunculata, Lavandula viridis, Thymus lotocephalus",

author = "Patr{\'i}cia Costa and Bruno Medronho and Sandra Gon{\c c}alves and Anabela Romano",

note = "Funding Information: The authors acknowledge support from the Portuguese Foundation for Science and Technology (FCT, project PTDC/AGR-TEC/4049/2012, post-doc grants assigned to Patr{\'i}cia Costa: SFRH/BPD/93108/2013, Bruno Medronho: SFRH/BPD/74540/2010 and Sandra Gon{\c c}alves: SFRH/BPD/84112/2012). Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

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doi = "10.1016/j.indcrop.2015.03.065",

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T1 - Cyclodextrins enhance the antioxidant activity of essential oils from three lamiaceae species

AU - Costa, Patrícia

AU - Medronho, Bruno

AU - Gonçalves, Sandra

AU - Romano, Anabela

N1 - Funding Information: The authors acknowledge support from the Portuguese Foundation for Science and Technology (FCT, project PTDC/AGR-TEC/4049/2012, post-doc grants assigned to Patrícia Costa: SFRH/BPD/93108/2013, Bruno Medronho: SFRH/BPD/74540/2010 and Sandra Gonçalves: SFRH/BPD/84112/2012). Publisher Copyright: © 2015 Elsevier B.V.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - In the present study, the effect of β-cyclodextrin (β-CD) and 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) on the antioxidant activity and storage stability of the essential oils (EOs) from Lavandula viridis, Lavandula pedunculata subsp. lusitanica and Thymus lotocephalus (Lamiaceae) was investigated. The presence of both cyclodextrins (CDs) was found to produce a remarkable enhancement on the antioxidant activity as assessed by the oxygen radical absorbance capacity (ORAC) assay. The highest free radical-scavenging effect was observed in the EO from T. lotocephalus, particularly at the highest concentration of HP-β-CD (i.e., 1900μmolTE/gEO). Moreover, the antioxidant activity of the EO/HP-β-CD complexes was found to be considerably stable over 30 days, at 4°C, possibly due to the higher solubility of the modified β-CD. The results obtained suggest that these systems can be a very interesting alternative as a natural source of antioxidants for different applications such as in the food preservation field.

AB - In the present study, the effect of β-cyclodextrin (β-CD) and 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) on the antioxidant activity and storage stability of the essential oils (EOs) from Lavandula viridis, Lavandula pedunculata subsp. lusitanica and Thymus lotocephalus (Lamiaceae) was investigated. The presence of both cyclodextrins (CDs) was found to produce a remarkable enhancement on the antioxidant activity as assessed by the oxygen radical absorbance capacity (ORAC) assay. The highest free radical-scavenging effect was observed in the EO from T. lotocephalus, particularly at the highest concentration of HP-β-CD (i.e., 1900μmolTE/gEO). Moreover, the antioxidant activity of the EO/HP-β-CD complexes was found to be considerably stable over 30 days, at 4°C, possibly due to the higher solubility of the modified β-CD. The results obtained suggest that these systems can be a very interesting alternative as a natural source of antioxidants for different applications such as in the food preservation field.

KW - Antioxidant activity

KW - Cyclodextrins

KW - Essential oils

KW - Lavandula pedunculata

KW - Lavandula viridis

KW - Thymus lotocephalus

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SN - 0926-6690

VL - 70

SP - 341

EP - 346

JO - Industrial Crops and Products

JF - Industrial Crops and Products

ER -

Cyclodextrins enhance the antioxidant activity of essential oils from three lamiaceae species

Abstract

Keywords

UN SDGs

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