Assessment of Phytochemical Characteristics of Walnut (Juglans regia) Leaves: Determination of Nutritional Value and Quantitative Content of Phenolic Compounds

Olena Gaviley; Svitlana Pankova; Lydmila Poliakova; Ganna Chorna

Makale detayları

Assessment of Phytochemical Characteristics of Walnut (Juglans regia) Leaves: Determination of Nutritional Value and Quantitative Content of Phenolic Compounds

Yazarlar:

Olena Gaviley | Svitlana Pankova | Lydmila Poliakova | Ganna Chorna

Yayıncı:

Ataturk University

Ana Başlıklar:

Ziraat Mühendisliği (Diğer)

Dergi:

Research in Agricultural Sciences Vol.55 Issue 3, pp.151-157

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001327099

pISSN:

2979-9686

Anahtar kelimeler:

Özet:

 This study aimed to assess the nutritional value of walnut leaves Juglans regia, investigate the content of major polyphenolic compounds in walnut leaves, and assess the potential of walnut leaves as a phytogenic supplement to poultry diets. The nutritional composition of dried ground walnut leaves crude protein, crude fat, crude fiber, calcium, phosphorus, vitamin E, b-carotene was assessed according to generally accepted methods. The quantitative content of individual groups of polyphenols, such as total phenols, hydroxycinnamic acids, flavonoids, and juglon, was determined spectrophotometrically. The content of the sum of tannins was determined by the titrimetric method. Walnut leaves contain a high content of b-carotene 295.0 μgg and natural antioxidant vitamin E 128.8 μgg. The protein content was noted at the level of 12.5, the fiber content - 12.86. In a significant amount, calcium and phosphorus accumulated in walnut leaves - 2.04 and 0.23, respectively. The content of the total hydroxycoric acids in terms of chlorogenic acid in walnut leaves was 24.3 mgg, the total content of phenolic compounds in gallic acid equivalent was 14.4 mgg, flavonoids in rutin equivalent was 20.2 mgg, and juglone was 2.72 mgg. The content of total tannins in walnut leaves was 124.5 mgg. The high nutritional value of walnut leaves compared to alfalfa meal and the presence of a number of biologically active polyphenolic compounds in a significant amount give grounds to consider this phyto-raw material not only as a valuable feed component, but also as a source of natural antioxidants.

 This study aimed to assess the nutritional value of walnut leaves Juglans regia, investigate the content of major polyphenolic compounds in walnut leaves, and assess the potential of walnut leaves as a phytogenic supplement to poultry diets. The nutritional composition of dried ground walnut leaves crude protein, crude fat, crude fiber, calcium, phosphorus, vitamin E, b-carotene was assessed according to generally accepted methods. The quantitative content of individual groups of polyphenols, such as total phenols, hydroxycinnamic acids, flavonoids, and juglon, was determined spectrophotometrically. The content of the sum of tannins was determined by the titrimetric method. Walnut leaves contain a high content of b-carotene 295.0 μgg and natural antioxidant vitamin E 128.8 μgg. The protein content was noted at the level of 12.5, the fiber content - 12.86. In a significant amount, calcium and phosphorus accumulated in walnut leaves - 2.04 and 0.23, respectively. The content of the total hydroxycoric acids in terms of chlorogenic acid in walnut leaves was 24.3 mgg, the total content of phenolic compounds in gallic acid equivalent was 14.4 mgg, flavonoids in rutin equivalent was 20.2 mgg, and juglone was 2.72 mgg. The content of total tannins in walnut leaves was 124.5 mgg. The high nutritional value of walnut leaves compared to alfalfa meal and the presence of a number of biologically active polyphenolic compounds in a significant amount give grounds to consider this phyto-raw material not only as a valuable feed component, but also as a source of natural antioxidants.

 This study aimed to assess the nutritional value of walnut leaves Juglans regia, investigate the content of major polyphenolic compounds in walnut leaves, and assess the potential of walnut leaves as a phytogenic supplement to poultry diets. The nutritional composition of dried ground walnut leaves crude protein, crude fat, crude fiber, calcium, phosphorus, vitamin E, b-carotene was assessed according to generally accepted methods. The quantitative content of individual groups of polyphenols, such as total phenols, hydroxycinnamic acids, flavonoids, and juglon, was determined spectrophotometrically. The content of the sum of tannins was determined by the titrimetric method. Walnut leaves contain a high content of b-carotene 295.0 μgg and natural antioxidant vitamin E 128.8 μgg. The protein content was noted at the level of 12.5, the fiber content - 12.86. In a significant amount, calcium and phosphorus accumulated in walnut leaves - 2.04 and 0.23, respectively. The content of the total hydroxycoric acids in terms of chlorogenic acid in walnut leaves was 24.3 mgg, the total content of phenolic compounds in gallic acid equivalent was 14.4 mgg, flavonoids in rutin equivalent was 20.2 mgg, and juglone was 2.72 mgg. The content of total tannins in walnut leaves was 124.5 mgg. The high nutritional value of walnut leaves compared to alfalfa meal and the presence of a number of biologically active polyphenolic compounds in a significant amount give grounds to consider this phyto-raw material not only as a valuable feed component, but also as a source of natural antioxidants.

 Bu çalışma, ceviz yapraklarının Juglans regia besin değerini değerlendirmeyi, ceviz yapraklarındaki başlıca polifenolik bileşiklerin içeriğini araştırmayı ve ceviz yapraklarının kanatlı hayvan diyetlerine fitogenik bir katkı maddesi olarak potansiyelini değerlendirmeyi amaçlamıştır. Kurutulmuş ve öğütülmüş ceviz yapraklarının besin bileşimi ham protein, ham yağ, ham lif, kalsiyum, fosfor, vitamin E, β-karoten genel olarak kabul edilen yöntemlere göre değerlendirilmiştir. Toplam fenoller, hidroksinamik asitler, flavonoidler ve juglon gibi bireysel polifenol gruplarının niceliksel içeriği spektrofotometrik olarak belirlenmiştir. Toplam tanenlerin içeriği titrimetrik yöntemle tespit edilmiştir. Ceviz yaprakları yüksek β-karoten 295,0 μgg ve doğal antioksidan vitamin E 128,8 μgg içeriğine sahiptir. Protein içeriği 12,5, lif içeriği ise 12,86 olarak kaydedilmiştir. Ceviz yapraklarında önemli miktarda kalsiyum ve fosfor birikmiştir, sırasıyla 2,04 ve 0,23. Ceviz yapraklarında klorojenik asit cinsinden toplam hidroksikorik asit içeriği 24,3 mgg, gallik asit eşdeğeri olarak toplam fenolik bileşik içeriği 14,4 mgg, rutin eşdeğeri olarak flavonoidler 20,2 mgg ve juglon da 2,72 mgg olarak belirlenmiştir. Ceviz yapraklarında toplam tanenlerin içeriği 124,5 mgg olmuştur. Ceviz yapraklarının yüksek besin değeri ve önemli miktarda biyolojik olarak aktif polifenolik bileşiklerin varlığı, bu fito hammaddeyi sadece değerli bir yem bileşeni olarak değil, aynı zamanda doğal antioksidan kaynağı olarak da değerlendirmeyi mümkün kılmaktadır.

Makale detayları

Assessment of Phytochemical Characteristics of Walnut (Juglans regia) Leaves: Determination of Nutritional Value and Quantitative Content of Phenolic Compounds

Yazarlar:

Olena Gaviley | Svitlana Pankova | Lydmila Poliakova | Ganna Chorna

Yayıncı:

Ataturk University

Ana Başlıklar:

Ziraat Mühendisliği (Diğer)

Dergi:

Research in Agricultural Sciences Vol.55 Issue 3, pp.151-157

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001327099

pISSN:

2979-9686

Walnut

Leaves

Nutritional value

Phenolic compounds

Hydroxycinnamic acids

Flavonoids

Tannins

JugloneCeviz

Yapraklar

Besin değeri

Fenolik bileşikler

Hidroksinamik asitler

Flavonoidler

Tanenler

Juglon

Sayı

Makale detayları

Yazarlar: Olena Gaviley | Svitlana Pankova | Lydmila Poliakova | Ganna Chorna

Yayıncı: Ataturk University

Ana Başlıklar: Ziraat Mühendisliği (Diğer)

Dergi: Research in Agricultural Sciences Vol.55 Issue 3, pp.151-157

Belge Tipi: Makale

Yayın Tarihi: 9/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001327099

pISSN: 2979-9686

Sayı

Yazarlar:

Olena Gaviley | Svitlana Pankova | Lydmila Poliakova | Ganna Chorna

Yayıncı:

Ataturk University

Ana Başlıklar:

Ziraat Mühendisliği (Diğer)

Dergi:

Research in Agricultural Sciences Vol.55 Issue 3, pp.151-157

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001327099

pISSN:

2979-9686