A comparative analysis of the effects of different drying and storage techniques on the phenolic content of Pistacia atlantica leaves

Fethi Toul; Marwa Ballou; Marwa Kessou

Makale detayları

A comparative analysis of the effects of different drying and storage techniques on the phenolic content of Pistacia atlantica leaves

Yazarlar:

Fethi Toul | Marwa Ballou | Marwa Kessou

Yayıncı:

İzzet KARA

Ana Başlıklar:

Plant Biochemistry | Natural Products and Bioactive Compounds

Dergi:

International Journal of Secondary Metabolite Vol.12 Issue 2, pp.261-270

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001340470

pISSN:

2148-6905

Anahtar kelimeler:

Özet:

 This study presents a comparative analysis of the effects of different drying and storage techniques on the phenolic content of Pistacia atlantica leaves in both whole and ground states. Four drying methods were evaluated: direct sunlight, a ventilated drying chamber, shade, and obscurity. Additionally, three storage conditions were assessed: direct sunlight, shade, and freezing. The concentrations of total phenolics, total flavonoids, and tannins were quantified, and antioxidant activity was evaluated using the DPPH radical scavenging assay. Our findings indicate that drying in obscurity and shade yielded the highest levels of total phenolics 369.452.12 and 362.781.36 mg GAEg DM, total flavonoids 54.340.95 and 55.681.25 mg QEg DM, and tannins 36.350.91 and 33.800.79 mg CEg DM, correlated with strong antioxidant activity 1.850.01 and 1.920.01 µgmL, respectively, particularly when the leaves were stored whole. The results emphasize that controlled drying methods ventilated chambers and darkness, along with storing the leaves whole and under freezing conditions, are optimal for preserving the antioxidant activity and phenolic content of P. atlantica leaves. Freezing proved to be the most effective storage condition for preserving phenolic compound concentrations and their associated antioxidant properties. Overall, the study highlights that the strategic selection of drying techniques and storage conditions is critical for optimizing the preservation of phenolic compounds and antioxidant activity in plant materials.

 This study presents a comparative analysis of the effects of different drying and storage techniques on the phenolic content of Pistacia atlantica leaves in both whole and ground states. Four drying methods were evaluated: direct sunlight, a ventilated drying chamber, shade, and obscurity. Additionally, three storage conditions were assessed: direct sunlight, shade, and freezing. The concentrations of total phenolics, total flavonoids, and tannins were quantified, and antioxidant activity was evaluated using the DPPH radical scavenging assay. Our findings indicate that drying in obscurity and shade yielded the highest levels of total phenolics 369.452.12 and 362.781.36 mg GAEg DM, total flavonoids 54.340.95 and 55.681.25 mg QEg DM, and tannins 36.350.91 and 33.800.79 mg CEg DM, correlated with strong antioxidant activity 1.850.01 and 1.920.01 µgmL, respectively, particularly when the leaves were stored whole. The results emphasize that controlled drying methods ventilated chambers and darkness, along with storing the leaves whole and under freezing conditions, are optimal for preserving the antioxidant activity and phenolic content of P. atlantica leaves. Freezing proved to be the most effective storage condition for preserving phenolic compound concentrations and their associated antioxidant properties. Overall, the study highlights that the strategic selection of drying techniques and storage conditions is critical for optimizing the preservation of phenolic compounds and antioxidant activity in plant materials.

 This study presents a comparative analysis of the effects of different drying and storage techniques on the phenolic content of Pistacia atlantica leaves in both whole and ground states. Four drying methods were evaluated: direct sunlight, a ventilated drying chamber, shade, and obscurity. Additionally, three storage conditions were assessed: direct sunlight, shade, and freezing. The concentrations of total phenolics, total flavonoids, and tannins were quantified, and antioxidant activity was evaluated using the DPPH radical scavenging assay. Our findings indicate that drying in obscurity and shade yielded the highest levels of total phenolics 369.452.12 and 362.781.36 mg GAEg DM, total flavonoids 54.340.95 and 55.681.25 mg QEg DM, and tannins 36.350.91 and 33.800.79 mg CEg DM, correlated with strong antioxidant activity 1.850.01 and 1.920.01 µgmL, respectively, particularly when the leaves were stored whole. The results emphasize that controlled drying methods ventilated chambers and darkness, along with storing the leaves whole and under freezing conditions, are optimal for preserving the antioxidant activity and phenolic content of P. atlantica leaves. Freezing proved to be the most effective storage condition for preserving phenolic compound concentrations and their associated antioxidant properties. Overall, the study highlights that the strategic selection of drying techniques and storage conditions is critical for optimizing the preservation of phenolic compounds and antioxidant activity in plant materials.

 This study presents a comparative analysis of the effects of different drying and storage techniques on the phenolic content of Pistacia atlantica leaves in both whole and ground states. Four drying methods were evaluated: direct sunlight, a ventilated drying chamber, shade, and obscurity. Additionally, three storage conditions were assessed: direct sunlight, shade, and freezing. The concentrations of total phenolics, total flavonoids, and tannins were quantified, and antioxidant activity was evaluated using the DPPH radical scavenging assay. Our findings indicate that drying in obscurity and shade yielded the highest levels of total phenolics 369.452.12 and 362.781.36 mg GAEg DM, total flavonoids 54.340.95 and 55.681.25 mg QEg DM, and tannins 36.350.91 and 33.800.79 mg CEg DM, correlated with strong antioxidant activity 1.850.01 and 1.920.01 µgmL, respectively, particularly when the leaves were stored whole. The results emphasize that controlled drying methods ventilated chambers and darkness, along with storing the leaves whole and under freezing conditions, are optimal for preserving the antioxidant activity and phenolic content of P. atlantica leaves. Freezing proved to be the most effective storage condition for preserving phenolic compound concentrations and their associated antioxidant properties. Overall, the study highlights that the strategic selection of drying techniques and storage conditions is critical for optimizing the preservation of phenolic compounds and antioxidant activity in plant materials.

Makale detayları

A comparative analysis of the effects of different drying and storage techniques on the phenolic content of Pistacia atlantica leaves

Yazarlar:

Fethi Toul | Marwa Ballou | Marwa Kessou

Yayıncı:

İzzet KARA

Ana Başlıklar:

Plant Biochemistry | Natural Products and Bioactive Compounds

Dergi:

International Journal of Secondary Metabolite Vol.12 Issue 2, pp.261-270

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001340470

pISSN:

2148-6905

Pistacia atlantica Desf.

Drying

Storage

Phenolic content

Antioxidant activityPistacia atlantica Desf.

Drying

Storage

Phenolic content

Antioxidant activity

Sayı

Makale detayları

Yazarlar: Fethi Toul | Marwa Ballou | Marwa Kessou

Yayıncı: İzzet KARA

Ana Başlıklar: Plant Biochemistry | Natural Products and Bioactive Compounds

Dergi: International Journal of Secondary Metabolite Vol.12 Issue 2, pp.261-270

Belge Tipi: Makale

Yayın Tarihi: 1/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001340470

pISSN: 2148-6905

Sayı

Yazarlar:

Fethi Toul | Marwa Ballou | Marwa Kessou

Yayıncı:

İzzet KARA

Ana Başlıklar:

Plant Biochemistry | Natural Products and Bioactive Compounds

Dergi:

International Journal of Secondary Metabolite Vol.12 Issue 2, pp.261-270

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001340470

pISSN:

2148-6905