Incorporation of polyphenolic peanut skin extracts and oregano essential oil into frankfurter-type sausage: effects on properties and shelf life

The objective of this work was to study the effect of the addition of polyphenolic peanut skin extracts (PSE) and oregano essential oil (OEO) on the microbiological, chemical, and sensory properties of frankfurter-type sausages during storage. Seven treatments were prepared: control sample (C: witho...

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Bibliographic Details
Published in:	Agriscientia (Córdoba) Vol. 37; no. 1; pp. 41 - 51
Main Authors:	Barrionuevo, María Guillermina, Monje, Eloisa, Enrico, Mabel, Ryan, Liliana, Asensio, Claudia Mariana, Nepote, Valeria, Grosso, Nelson Ruben
Format:	Journal Article
Language:	English
Published:	Facultad de Ciencias Agropecuarias. Universidad Nacional de Córdoba 30-06-2020
Subjects:	AGRONOMY polyphenols tegumento de maní sensory oregano peanut skin polifenoles sensorial salchichas sausages orégano
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Summary:	The objective of this work was to study the effect of the addition of polyphenolic peanut skin extracts (PSE) and oregano essential oil (OEO) on the microbiological, chemical, and sensory properties of frankfurter-type sausages during storage. Seven treatments were prepared: control sample (C: without additives); sausage with commercial additives (F); with OEO (O); with Runner PSE (R); with Virginia PSE (V); with OEO and Runner PSE (OR), and with OEO and Virginia PSE (OV). Consumer tests and general composition analysis were performed on the fresh products (sausages without storage). Sausages were stored at 4 °C during 37 days and samples were extracted at days 0, 12, 23, and 37 for microbiological, chemical (peroxide value and conjugated dienes), and sensory descriptive analysis. All sausages had low fat content (3.36 g/100g) and good colour, flavour and texture acceptance scores by consumers (between 57 on a 9-point hedonic scale). The absence of commercial additives (nitrite, nitrate, and other compounds) affected the sausage characteristic colour, reducing the consumer’s acceptance. The treatments with natural additives had less microbiological and chemical deterioration compared to control sample. The results suggest peanut skin extracts and oregano essential oil can replace commercial additives as preservatives in sausages. El objetivo del trabajo fue estudiar el efecto del agregado de extractos polifenólicos de tegumento de maní (EP) y aceite esencial de orégano (AEO) en las propiedades microbiológicas, químicas y sensoriales de salchichas tipo Frankfurt durante el almacenaje. Se prepararon siete tratamientos: salchichas control (sin aditivos), con aditivos comerciales, con AEO, con EP Runner, con EP Virginia, con EP Runner y AEO y con EP Virginia y AEO. Inicialmente, sobre las muestras sin almacenaje, se determinó aceptabilidad por consumidores y composición química general. Las salchichas se almacenaron a 4 °C durante 37 días, y se extrajeron muestras para análisis microbiológico, químico (índice de peróxido, dienos conjugados) y sensorial descriptivo a los días 0, 12, 23 y 37. Todos los tratamientos tuvieron bajos contenidos de lípidos (3.36 g/100g) y buenos resultados de aceptabilidad, con valores entre 5-7 (escala hedónica de 9 puntos). La ausencia de aditivos comerciales (nitrito, nitrato y otros compuestos) afectó el color característico del producto, reduciendo su aceptabilidad. Los tratamientos con aditivos naturales tuvieron menor deterioro microbiológico y químico durante el almacenaje. Los resultados sugieren que los extractos de piel de maní y el aceite esencial de orégano pueden reemplazar a los aditivos comerciales como conservantes en salchichas.
ISSN:	1668-298X 1668-298X
DOI:	10.31047/1668.298x.v37.n1.25427