A Comparative Study on Yayık Butter Produced with Commercial and Endemic Yogurt Starter Culture Strains

Marwa Haddar; Ebru Şenel Özkan; Elif Ayşe Anlı

Article Details

A Comparative Study on Yayık Butter Produced with Commercial and Endemic Yogurt Starter Culture Strains

Authors:

Marwa Haddar | Ebru Şenel Özkan | Elif Ayşe Anlı

Publisher:

Ankara University

Main Topics:

Dairy Technology

Journal:

Journal of Agricultural Sciences Vol.31 Issue 2, pp.496-515

Document Type:

Article

Publication Date:

3/2025

Document Language:

English

Document ID (Org No.):

2001342997

pISSN:

1300-7580

Keywords:

Abstract:

 Starter cultures are involved in biochemical reactions during fermentation resulting in the diversity of foods. They are also used for aromaflavor, texture, nutritional quality enhancement, and shelf-life extension. This study aimed to evaluate the effects of using four different starter culture combinations of which two were isolated starter cultures of Streptococcus thermophilus St and Lactobacillus delbrueckii subsp. bulgaricus Lb and two were commercial cultures of the same bacteria in Yayık butter characteristics. For this purpose, four different yogurt samples were prepared and then churned to obtain four different Yayık butter samples. Physico-chemical analysis, free fatty acids, volatile compounds, and sensory analysis were performed on the 1st, 30th, and 60th days of storage. No significant differences were observed in moisture, fat, titratable acidity, acid degree, and peroxide value between the samples P0.05. However, endemic isolated combined cultures showed better performance in terms of free fatty acid formation and sensorial attributes. The serum pH differed significantly among the samples with higher values in isolated cultures P0.05. Storage time was significantly effective on the titratable acidity SH of all Yayık butter samples P0.01. The peroxide values were lower than the threshold value of 2.0 meq O2kg fat. Acid degree varied between 1.70-1.75 mg KOHg during the storage period. Endemic isolated cultures exhibited the highest free fatty acid accumulation. In the Yayık butter samples, a total of 31 volatile compounds were quantified. The highest number was detected in the butter samples produced with isolated strains 27St27Lb and 27StALb. Yayık butter samples produced with 27St27Lb contained 16, while with 27StALb had 7 compounds identified. Butyric acid and hexanoic acid were the most abundant carboxylic acids while ketones were the predominant volatile compound detected in all Yayık butter samples. This study highlights the importance of preserving traditional culture strains and offers another perspective on using them in dairy industry.

 Starter cultures are involved in biochemical reactions during fermentation resulting in the diversity of foods. They are also used for aromaflavor, texture, nutritional quality enhancement, and shelf-life extension. This study aimed to evaluate the effects of using four different starter culture combinations of which two were isolated starter cultures of Streptococcus thermophilus St and Lactobacillus delbrueckii subsp. bulgaricus Lb and two were commercial cultures of the same bacteria in Yayık butter characteristics. For this purpose, four different yogurt samples were prepared and then churned to obtain four different Yayık butter samples. Physico-chemical analysis, free fatty acids, volatile compounds, and sensory analysis were performed on the 1st, 30th, and 60th days of storage. No significant differences were observed in moisture, fat, titratable acidity, acid degree, and peroxide value between the samples P0.05. However, endemic isolated combined cultures showed better performance in terms of free fatty acid formation and sensorial attributes. The serum pH differed significantly among the samples with higher values in isolated cultures P0.05. Storage time was significantly effective on the titratable acidity SH of all Yayık butter samples P0.01. The peroxide values were lower than the threshold value of 2.0 meq O2kg fat. Acid degree varied between 1.70-1.75 mg KOHg during the storage period. Endemic isolated cultures exhibited the highest free fatty acid accumulation. In the Yayık butter samples, a total of 31 volatile compounds were quantified. The highest number was detected in the butter samples produced with isolated strains 27St27Lb and 27StALb. Yayık butter samples produced with 27St27Lb contained 16, while with 27StALb had 7 compounds identified. Butyric acid and hexanoic acid were the most abundant carboxylic acids while ketones were the predominant volatile compound detected in all Yayık butter samples. This study highlights the importance of preserving traditional culture strains and offers another perspective on using them in dairy industry.

 Starter cultures are involved in biochemical reactions during fermentation resulting in the diversity of foods. They are also used for aromaflavor, texture, nutritional quality enhancement, and shelf-life extension. This study aimed to evaluate the effects of using four different starter culture combinations of which two were isolated starter cultures of Streptococcus thermophilus St and Lactobacillus delbrueckii subsp. bulgaricus Lb and two were commercial cultures of the same bacteria in Yayık butter characteristics. For this purpose, four different yogurt samples were prepared and then churned to obtain four different Yayık butter samples. Physico-chemical analysis, free fatty acids, volatile compounds, and sensory analysis were performed on the 1st, 30th, and 60th days of storage. No significant differences were observed in moisture, fat, titratable acidity, acid degree, and peroxide value between the samples P0.05. However, endemic isolated combined cultures showed better performance in terms of free fatty acid formation and sensorial attributes. The serum pH differed significantly among the samples with higher values in isolated cultures P0.05. Storage time was significantly effective on the titratable acidity SH of all Yayık butter samples P0.01. The peroxide values were lower than the threshold value of 2.0 meq O2kg fat. Acid degree varied between 1.70-1.75 mg KOHg during the storage period. Endemic isolated cultures exhibited the highest free fatty acid accumulation. In the Yayık butter samples, a total of 31 volatile compounds were quantified. The highest number was detected in the butter samples produced with isolated strains 27St27Lb and 27StALb. Yayık butter samples produced with 27St27Lb contained 16, while with 27StALb had 7 compounds identified. Butyric acid and hexanoic acid were the most abundant carboxylic acids while ketones were the predominant volatile compound detected in all Yayık butter samples. This study highlights the importance of preserving traditional culture strains and offers another perspective on using them in dairy industry.

 Starter cultures are involved in biochemical reactions during fermentation resulting in the diversity of foods. They are also used for aromaflavor, texture, nutritional quality enhancement, and shelf-life extension. This study aimed to evaluate the effects of using four different starter culture combinations of which two were isolated starter cultures of Streptococcus thermophilus St and Lactobacillus delbrueckii subsp. bulgaricus Lb and two were commercial cultures of the same bacteria in Yayık butter characteristics. For this purpose, four different yogurt samples were prepared and then churned to obtain four different Yayık butter samples. Physico-chemical analysis, free fatty acids, volatile compounds, and sensory analysis were performed on the 1st, 30th, and 60th days of storage. No significant differences were observed in moisture, fat, titratable acidity, acid degree, and peroxide value between the samples P0.05. However, endemic isolated combined cultures showed better performance in terms of free fatty acid formation and sensorial attributes. The serum pH differed significantly among the samples with higher values in isolated cultures P0.05. Storage time was significantly effective on the titratable acidity SH of all Yayık butter samples P0.01. The peroxide values were lower than the threshold value of 2.0 meq O2kg fat. Acid degree varied between 1.70-1.75 mg KOHg during the storage period. Endemic isolated cultures exhibited the highest free fatty acid accumulation. In the Yayık butter samples, a total of 31 volatile compounds were quantified. The highest number was detected in the butter samples produced with isolated strains 27St27Lb and 27StALb. Yayık butter samples produced with 27St27Lb contained 16, while with 27StALb had 7 compounds identified. Butyric acid and hexanoic acid were the most abundant carboxylic acids while ketones were the predominant volatile compound detected in all Yayık butter samples. This study highlights the importance of preserving traditional culture strains and offers another perspective on using them in dairy industry.

Article Details

A Comparative Study on Yayık Butter Produced with Commercial and Endemic Yogurt Starter Culture Strains

Authors:

Marwa Haddar | Ebru Şenel Özkan | Elif Ayşe Anlı

Publisher:

Ankara University

Main Topics:

Dairy Technology

Journal:

Journal of Agricultural Sciences Vol.31 Issue 2, pp.496-515

Document Type:

Article

Publication Date:

3/2025

Document Language:

English

Document ID (Org No.):

2001342997

pISSN:

1300-7580

Yayık butter

isolated strains

Lipolysis

oxidative stability

volatile compounds

sensory analysis.

Issues

Article Details

A Comparative Study on Yayık Butter Produced with Commercial and Endemic Yogurt Starter Culture Strains

Authors: Marwa Haddar | Ebru Şenel Özkan | Elif Ayşe Anlı

Publisher: Ankara University

Main Topics: Dairy Technology

Journal: Journal of Agricultural Sciences Vol.31 Issue 2, pp.496-515

Document Type: Article

Publication Date: 3/2025

Document Language: English

Document ID (Org No.): 2001342997

pISSN: 1300-7580

Yayık butter

isolated strains

Lipolysis

oxidative stability

volatile compounds

sensory analysis.

Issues

Authors:

Marwa Haddar | Ebru Şenel Özkan | Elif Ayşe Anlı

Publisher:

Ankara University

Main Topics:

Dairy Technology

Journal:

Journal of Agricultural Sciences Vol.31 Issue 2, pp.496-515

Document Type:

Article

Publication Date:

3/2025

Document Language:

English

Document ID (Org No.):

2001342997

pISSN:

1300-7580