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Volume 13, Issue 2, 2024

Online ISSN: 2182-1054

Volume 13 , Issue 2, (2024)

Published: 18.10.2024.

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18.10.2016.

Original scientific paper

Natural antioxidants isolated from Schinus areira leaves by ultrasound-assisted extraction

The aim of this study was to optimize the extraction of antioxidant compounds from Schinus areira leaves using ultrasound assisted extraction and response surface methodology. The effect of sonication time and plant material:solvent ratio were used to optimize the recovery. Results showed that a high recovery of antioxidant compounds from leaves of three different S. areira specimens was achieved under optimized conditions. The leaf extracts obtained displayed a DPPH (1,1-Diphenyl-2-picrylhydrazyl) radical scavenging activity analogous to the well-known antioxidant trolox (EC50 = 23-46 vs 36.1 µg/mL, respectively). In addition, these extracts showed a good potency to eliminate superoxide and nitric oxide-radicals as well as a moderate antimicrobial activity against gram positive Staphylococcus aureus and Enterococcus faecalis and yeast. HPLC chromatography analysis of the three S. areira leaf extracts showed different high contents of kaempferol-3-O-rutinoside, quercetin-3-O-galactoside and 3-O-caffeoylquinic acid. The results showed that the S. areira leaf extracts contained a high amount of antioxidant phenolic compounds, which might be a valuable source to be used as additives in plant-based foods.

Liliana S. Celaya, Carmen I. Viturro, Luıs R. Silva, Silvia Moreno

18.10.2016.

Original scientific paper

Preparation of Hulu-mur flavored carbonated beverage based on Feterita sorghum (Sorghum bicolor) malt

In this study, sorghum Feterita malt extract was used to prepare carbonated beverages flavored with traditional Hulu-mur spices extract. The beverages produced were assessed for their physicochemical,sensory, and nutritional qualities. Malting (3–5 days) of the Feterita grains showed significant (P ≤ 0.05) differences in proximate composition from that of unmalted grains. Protein and sugars increased significantly (P ≤ 0.05) with increased the malting time (days), while there was a significant (P ≤ 0.05) reduction in oil and starch content during malting progress. The kilning temperature of 150 °C for 20 minutes was found to produce the most acceptable Hulu-mur carbonated beverage analogue in terms of flavor and taste. Significant differences (P ≤ 0.05) were observed in physicochemical and nutritional qualities between the Hulu-mur analogue carbonated beverage and commercial non-alcoholic beverage. The Hulu-mur carbonated beverage analogue was rich in Na, K, Ca, and Fe (26.45, 21.84, 24.00, and 0.57 mg /100 g, respectively) compared to levels of the same minerals in the non-alcoholic beverage (22.31, 8.19, 22.00 and 0.15 mg/100 g, respectively). The Hulu-mur analogue also had a higher calorific value (35.85 kcal /100 mL) compared to the non-alcoholic beverage (32.96 kcal/100 mL).

Sara F. A. Baidab, Solafa A. Hamad, Abdel Halim R. Ahmed, Isam Mohamed Ahmed

16.04.2016.

Original scientific paper

The Atlantic diet – Origin and features

Despite globalization there still are food patterns which are clearly differentiated from one region to another in Europe and elsewhere. In this study the Atlantic Diet is considered as the traditional diet in Portugal and Galicia, a region in northwest Spain. This paper aims to contribute to a better understanding of the Atlantic Diet food pattern in order to fully exploit the potential of this Atlantic gastronomical heritage. The background of the Atlantic Diet concept, the characterization of Atlantic Diet foods and a compilation of scientific findings related to the consumption of these foods are covered. A brief description of the Mediterranean Diet, the primitive pattern and the updated Mediterranean pyramid are also included in order to aid understanding of the globalization of this previously local health food pattern.
Final remarks and suggestions for further studies are made. 

Manuela Vaz Velho, Rita Pinheiro, Ana Sofia Rodrigues

18.10.2016.

Original scientific paper

Assessment of nutritional composition in elephant foot yam (Amorphophallus paeoniifolius Dennst- Nicolson) cultivars

Elephant foot yams make a significant contribution to diets in tribal people of India. However, there is insufficient study of their nutritional and antioxidant value. In this paper the various traits of eleven cultivars of elephant foot yam: BCA-1, BCA-2, BCA-4, BCA-5, BCA-6, NDA-4, NDA-5, NDA-9, IGAM-1, AC-28 and Gajendra were studied and observed during the growth and development stage. The cultivar of BCA-6 contained the maximum amount of starch and total phenol at 100 Days After Planting (DAP) while cv., NDA-9 and NDA-5 showed the maximum content of starch and total phenol at 250 DAP respectively. However, the cultivar BCA-1 stored the maximum amount of carbohydrate at 100 DAP whereas ascorbic acid and β-carotene content was highest at 250 DAP. The protein amount was maximum in cv., BCA-2 and AC-28 at 100 and 250 DAP respectively. This information will provide breeders with the ability to develop desirable types of elephant foot yams having high yields and better nutritional profiles.

Amit Singh, Arvind Chaurasiya, Surajit Mitra

18.04.2016.

Original scientific paper

Barriers to using consumer science information in food technology innovations: An exploratory study using Delphi methodology

Food technology innovation has the potential to deliver many benefits to society, although some technologies have been problematic in terms of public acceptance. In promoting the commercial success of innovative technological processes and resultant products it will be important to incorporate information relating to consumer preferences and concerns during their development. The barriers to the utilisation of consumer information during technological development was explored using a two round Delphi study involving 75 experts with an interest in new food technology (food technologists and consumer scientists). There was overall agreement that consumer information should be used in technology implementation and product design, and that good communication between key actors at pivotal stages during the development of new food technologies and products was important. However disciplinary differences were perceived to be a barrier to communication, as were difficulties associated with producing consumer information usable by food technologists. A strategy to improve inter-disciplinary communication is proposed, involving the creation of multi-disciplinary teams working together throughout the development project’s duration, including those with interdisciplinary experience. Deficiencies in the specification of the information required from consumer scientists need to be overcome. Consumer science results need to be concrete and presented as salient to and usable by food technologists.

Marian E. Raley, Maddalena Ragona, Siet J. Sijtsema, Arnout R.H. Fischer, Lynn J. Frewer

18.04.2016.

Original scientific paper

Pronase hydrolysis as a pretreatment for quantifying Maillard intermediates during toasting of cornflakes

Some of the products generated by the Maillard reaction are desired and very important for defining consumer acceptance of breakfast cereals. However, in recent years there has been an increased concern about compounds that are potentially harmful such as furfurals. The aim of this work was to analyze the effectiveness of protein hydrolysis with pronase as a pretreament for the evaluation of furfurals generated by the Maillard reaction during toasting of cornflakes and the parallel development of brown and fluorescent compounds. Furfurals were more accurately quantified with the pronase hydrolysis pretreatment because the protein matrix binds furfurals and fluorescent compounds. For control of the early reaction steps in the toasting process, the most sensitive parameter was fluorescence.

Mario Cueto, Abel E. Farroni, M. del Pilar Buera

18.04.2016.

Original scientific paper

Following the trail of crumbs: A bibliometric study on consumer behavior in the Food Science and Technology field

The main goal of this paper was to conduct an exploratory study regarding consumer preference in the field of Food Science and Technology. Two questions guided this study: Is it possible to identify a trail of crumbs concerning consumer behavior in the Food Science and Technology field? And, if that trail exists, where is it leading academia in terms of research trends of interest? A bibliometric study was conducted using an analysis software called CiteSpace. The use of this methodology ensured the impartiality of the literature review of the topic of interest. A survey of all articles indexed in Web of Science between 1993 and 2013 regarding consumer behaviour was carried out. In total, 1,786 articles were analyzed. The recent increased concern regarding consumer behavior was evident. With the USA and Spain having a significant role in driving the trail. Eight other countries that exhibited similar influences are: Italy, England, Australia, Germany, Denmark, France, Netherlands and Brazil. The research trends observed were grouped into seven major hot topics: sensory, health, safety, willingness to pay, packaging, ethics, and lifestyle/convenience. However, the development of publishing trends depended on where the research was carried out. A final suggestive finding, demonstrated that scientific knowledge does not occur in a vacuum.

Marcia-Gabriela C. Kasemodel, Fausto Makishi, Roberta C. Souza, Vivian-Lara Silva

18.10.2016.

Original scientific paper

Modeling the kinetics of peroxidase inactivation, colour and texture changes of Portuguese cabbage (Brassica oleracea L. var. costata DC) during UV-C light and heat blanching

The effects of heat blanching and UV-C light followed by heat on Portuguese cabbage peroxidase (POD), colour and texture were studied in the temperature range of 80-95 °C. POD inactivation, lightness (L) and yellowness (b) colour changes were described by a first-order reaction model. The greenness (a) colour and texture (firmness) changes followed a two fraction kinetic model behaviour. The temperature effect was well described by the Arrhenius law. At lower temperatures the combined treatment showed higher POD inactivation. Colour and texture parameters did not show significant differences between treatments. Long processing times turned the leaves slightly darker, decreased greenness, yellowness and firmness. Short processing times increased the firmness and greenness of the leaves. The treatment at 80 °C for 90 seconds reduced 90% of POD, retaining 98% of lightness and 92% of yellowness and improved the green colour (130%) and firmness (125%). At 80 °C the heat blanching required 7.4 min to inactivate 90% of the enzyme activity, reducing lightness, greenness, yellowness and firmness to 92%, 68%, 62% and 61%, respectively. The present findings will help to optimize the Portuguese cabbage blanching conditions.

Rui M. S. Cruz, Ana I. A. Godinho, Dilek Aslan, Necip F. Kocak, Margarida Vieira

01.12.2015.

Professional paper

Towards the development of a common starter culture for fufu and usi (edible starch): Screening for potential starters

Fermented cassava products like fufu and usi are important staple foods in many African homes. Natural fermentation time is usually long resulting in slower acidification and inconsistent nutritional composition of products which could be overcome with the use of starter culture. However, most available starters are used for single food fermentation and are uneconomical. This necessitates the development of a starter culture for multiple related food products to reduce cost. Hence, this study aimed at screening for potential starters in the development of a common starter culture for fufu and usi.Fresh, peeled, chipped and grated cassava tubers were spontaneously fermented and lactic acid bacteria were isolated from the fermenting mash at 24 hour intervals. Ninety eight (98) isolates were randomly picked. Lactobacillus plantarum had highest occurrence (50.0%) in both fermentations.All selected isolates did not hydrolyze starch, but produced linamarase and pectinase. Fermenting pH ranged between 6.50 and 3.58 during 72 hours fermentation. Lactic acid concentration ranged from 1.10 g/L to 1.78 g/L at 24 hours, 1.22 g/L to 2.45 g/L at 48 hours and 0.57 g/L to 2.55 g/l at 72 hours. The highest hydrogen peroxide concentration produced was 629 µg/L at 24 hours while the least was 136 µg/L at 72 hours. 1.08 g/L of diacetyl was the least concentration produced at 24 hours while the highest was 2.86 g/L at 48 hours.Five potential starters were identified as Lactobacillus pentosus F2A, L. plantarum subsp. argentolarensis F2B, L. plantarum F2C, L. plantarum U2A and L. paraplantarum U2C.

Kubrat A. Oyinlola, Anthony A. Onilude, Oluwaseun E. Garuba

01.12.2015.

Professional paper

Assessment of nutritional composition in elephant foot yam (Amorphophallus paeoniifolius Dennst- Nicolson) cultivars

Elephant foot yams make a significant contribution to diets in tribal people of India. However, there is insufficient study of their nutritional and antioxidant value. In this paper the various traits of eleven cultivars of elephant foot yam: BCA-1, BCA-2, BCA-4, BCA-5, BCA-6, NDA-4, NDA-5, NDA-9, IGAM-1, AC-28 and Gajendra were studied and observed during the growth and development stage. The cultivar of BCA-6 contained the maximum amount of starch and total phenol at 100 Days After Planting (DAP) while cv., NDA-9 and NDA-5 showed the maximum content of starch and total phenol at 250 DAP respectively. However, the cultivar BCA-1 stored the maximum amount of carbohydrate at 100 DAP whereas ascorbic acid and β-carotene content was highest at 250 DAP. The protein amount was maximum in cv., BCA-2 and AC-28 at 100 and 250 DAP respectively. This information will provide breeders with the ability to develop desirable types of elephant foot yams having high yields and better nutritional profiles.

Amit Singh, Arvind Chaurasiya, Surajit Mitra

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