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1 – 10 of 739Lara Siqueira de Oliveira, Maria Elisabeth Machado Pinto‐e‐Silva, Maria Carolina Batista Campos von Atzingen and Rosana Aparecida Manólio Soares
The purpose of this paper is to evaluate the retention rate of vitamin C and carotenoids in vegetables submitted to heat treatment.
Abstract
Purpose
The purpose of this paper is to evaluate the retention rate of vitamin C and carotenoids in vegetables submitted to heat treatment.
Design/methodology/approach
Samples of carrot and broccoli were submitted to conventional cooking, steaming, microwaving and autoclave. Ascorbic acid concentrations were determined according to the methodology of Zhang and Hamauzu. The extraction of carotenoids was done using the methodology of Niizu and Rodriguez‐Amaya. The formula of Murphy et al. was used to calculate the retention rate of vitamins.
Findings
The highest retention percentage of ascorbic acid, α‐carotene, β‐carotene and lutein in carrots was obtained using microwave cooking. In the case of broccoli, the best retention for α‐ and β‐carotene was by steam cooking, whereas ascorbic acid was best preserved in the autoclave and lutein by conventional cooking.
Practical implications
Ascorbic acid and carotenoids are compounds present in vegetables relevant mostly from a therapeutical point of view, as they appear to be associated with the prevention of many diseases. However, these vitamins are lost during the cooking process, which is of great importance in developing countries where deficits of these nutrientes are quite common in the population.
Originality/value
The results obtained in this study indicate that the cooking technique of choice is of fundamental importance not only at home but also for the food industry, considering the increasing consumption of processed foods.
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Ajith Amsasekar, Rahul S. Mor, Anand Kishore, Anupama Singh and Saurabh Sid
The increased demand for high-quality, nutritionally rich processed food has led to non-thermal food processing technologies like high pressure processing (HPP), a novel process…
Abstract
Purpose
The increased demand for high-quality, nutritionally rich processed food has led to non-thermal food processing technologies like high pressure processing (HPP), a novel process for microbial inactivation with minimal loss of nutritional and sensory properties. The purpose of this paper is to highlight the impact of HPP on the microbiological, nutritional and sensory properties of food.
Design/methodology/approach
Recent research on the role of HPP in maintaining food quality and safety and the impact of process conditions with respect to various food properties have been explored in this paper. Also, the hurdle approach and the effectiveness of HPP on food quality have been documented.
Findings
HPP has been verified for industrial application, fulfilling the consumer demand for processed food with minimum nutrition loss at low temperatures. The positive impact of HPP with other treatments is known as the hurdle approach that enhances its impact against microorganism activity and minimizes the effects on nutrition and sensory attributes.
Originality/value
This paper highlights the impact of HPP on various food properties and a good alternative as non-thermal technology for maintaining shelf life, sensory properties and retention of nutrients.
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Maria Thereza Medeiros Fernandes, Wilma Fabiana Ferreira da Silva, Romayana Medeiros Oliveira Tavares, Breno Gustavo Porfírio Bezerra, Rodrigo Antônio Ponce de Leon Ferreira de Carvalho and Karla Suzanne Florentino da Silva Chaves Damasceno
The study aims to analyze the composition and mineral profile of oyster shell powder (OSP) and assess its potential as a sustainable source of calcium.
Abstract
Purpose
The study aims to analyze the composition and mineral profile of oyster shell powder (OSP) and assess its potential as a sustainable source of calcium.
Design/methodology/approach
A total of two batches of OSP with different particle sizes had been evaluated for centesimal and mineral composition and microbiological quality. OSP with smaller particles (0.85 mm) was used in the production of bread: standard bread (SB) (0%), fortified bread (FB1) (3%) and FB2 (4%). Centesimal and mineral composition and sensory acceptance had been performed. The internal preference map had been constructed using principal component analysis. The Just About Right data and the influence of sensory attributes on bread acceptance had been assessed by a penalty analysis test.
Findings
OSP-0.85 mm had calcium content (478.47 ± 2.37 mg.g-1) lower than OSP-1.00 mm (521.15 ± 0.99 mg.g-1) due to retention of particles. In both batches, heavy metals such as chromium, nickel and copper had not detected. FB1 and FB2 had the best nutritional content compared to SB, with higher calcium content (mg.g-1) 0.69 ± 0.07; 13.76 ± 0.72 and 19.47 ± 1.99 for SB, FB1 and FB2, respectively. The internal preference map showed better acceptance of FB1 compared to FB2. The penalty test showed that this acceptance was penalized (p < 0.05) due to the sandy texture.
Originality/value
The large number of shells generated in the processing of oysters is an environmental problem and generates waste of a natural source of calcium. It has been demonstrated that oyster shell powder can be used as a natural and sustainable source of calcium in bread, requiring further studies to assess the bioavailability of calcium.
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It tends to be called the corner shop, mainly because it occupied a corner building for extra window space, but also due to the impetus given to the name by television series…
Abstract
It tends to be called the corner shop, mainly because it occupied a corner building for extra window space, but also due to the impetus given to the name by television series seeking to portray life as it used to be. The village grew from the land, a permanent stopping place for the wandering tribes of early Britain, the Saxons, Welsh, Angles; it furnished the needs of those forming it and eventually a village store or shop was one of those needs. Where the needs have remained unchanged, the village is much as it has always been, a historical portrait. The town grew out of the village, sometimes a conglomerate of several adjacent villages. In the days before cheap transport, the corner shop, in euphoric business terms, would be described as “a little gold mine”, able to hold its own against the first introduction of multiple chain stores, but after 1914 everything changed. Edwardian England was blasted out of existence by the holocaust of 1914–18, destroyed beyond all hope of recovery. The patterns of retail trading changed and have been continuously changing ever since. A highly developed system of cheap bus transport took village housewives and also those in the outlying parts of town into busy central shopping streets. The jaunt of the week for the village wife who saw little during the working days; the corner shop remained mainly for things they had “run out of”. Every village had its “uppety” madames however who affected disdain of the corner shop and its proprietors, preferring to swish their skirts in more fashionable emporia, basking in the obsequious reception by the proprietor and his equally servile staff.
Fiorella Sinesio, Anna Saba, Elisabetta Moneta, Marina Peparaio, Eleonora Saggia Civitelli and Flavio Paoletti
The study aimed to investigate consumers’ views on criteria to be claimed for organic processed foods and information to be communicated.
Abstract
Purpose
The study aimed to investigate consumers’ views on criteria to be claimed for organic processed foods and information to be communicated.
Design/methodology/approach
An online survey was carried out among 439 adults living in Italy, users of processed organic food, to gather opinions on criteria that processing of organic food should meet and on the terms that best define “careful” processing. Next, a conjoint design was applied to examine the effects of five independent factors on consumers' ideal concept of “organic”; these were potential information on packaging, processing, additives and product quality, and the type of food product. Three products with different processing level were selected: an ultra-processed and multi-ingredient product (vegetable burger), a processed product preserved by canning (peas in glass jar) and a minimally processed product (bagged salad).
Findings
The findings highlight that consumers attach more importance to the organic food carrier than the informational messages. Information on the processing and packaging follows, with messages on quality and on additives seemingly of minor importance. Three clusters of respondents were identified: those driven primarily by the type of organic food (24.6%), those placing more emphasis on product processing (21.3%), and a third larger cluster (54.1%) who expressed almost equal importance to all the factors considered. As for the processing of organic products, “eco-friendly” was the best message.
Originality/value
This paper offers insights into what best outlines the ideal concept of “processed organic food” as seen by organic food consumers, to be communicated to better guide their purchasing decisions.
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T. Longvah, Anitha Chauhan, Sreedhar Mudavath, Bhaskar Varanasi and Neeraja CN
Rice landraces are essential for supplying beneficial traits for developing improved rice varieties with better nutritional quality. Nevertheless, in a yield-driven environment…
Abstract
Purpose
Rice landraces are essential for supplying beneficial traits for developing improved rice varieties with better nutritional quality. Nevertheless, in a yield-driven environment, grain nutritional quality has been ignored especially that of rice landraces. Given this, the purpose of this study is to evaluate the content and nutritional variability of rice landraces from Manipur.
Design/methodology/approach
Thirty-three most popular rice landraces were collected as dry paddy samples from Manipur and transported to the National Institute of Nutrition, Hyderabad, by air. All the paddy samples were processed and analyzed for 35 nutrient parameters using standard methodologies.
Findings
The mean nutrient content of Nagaland brown rice was: protein 7.5 ± 0.8, fat 3.0 ± 0.3, TDF 5.5 ± 0.4 and ash 1.2 ± 0.2 g/100g. The range of water soluble-vitamin content in mg/100g, was 0.1–0.43 for Thiamine and for Niacin 2.1–3.5, while the content in µg/100g was 40–64 for Riboflavin, 0.5–3.9 for Pantothenic acid and 20–118 for Pyridoxine. A relatively large coefficient of variation was observed for iron (25%), manganese (28%), copper (32%), calcium (13%) and phosphorus (11%). Manipur rice landraces have significantly higher total dietary fiber and lower phytate contents than modern varieties. Milling led to steep losses of nutrients, and limiting to 5% milling substantially improves nutrient retention in milled rice.
Research limitations/implications
Future nutrition interventions should use rice with superior nutrient quality to improve nutrient intakes. Manipur rice landraces conserved over generations can broaden the genetic base of breeding stocks especially in the face of climate change.
Originality/value
The paper presents comprehensive nutritional data of 33 rice landraces from the state of Manipur, India. The results indicate large nutrient variability even within these 33 rice landraces with important traits such as high total dietary fiber and low phytate contents. The study highlights the importance of conserving the existing rich genetic material of Manipur rice landraces to develop varieties that combine higher yields with stress tolerance and superior grain nutritional value to improve the food and nutrient security.
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Currently, there is a conflict in developing countries between the requirements for the self-development of forestry and the insufficient investment in the forestry sector, and…
Abstract
Purpose
Currently, there is a conflict in developing countries between the requirements for the self-development of forestry and the insufficient investment in the forestry sector, and the forest ticket system is an innovative forestry management method to solve this contradiction. In the research on the forest ticket system, the study of its price formation mechanism is relatively important. The key issues of the forest ticket system are how to form the forest ticket price and whether the forest ticket pricing methods are reasonable. Solving these problems is the purpose of this study.
Design/methodology/approach
This study will use three methods, namely the forest ecosystem service value evaluation index method, the ecosystem service value based on per unit area evaluation method and the contingent valuation method, to study the forest ticket price formation mechanism, filling the gap in the current research on forest ticket pricing methods. It will analyze how these three pricing methods specifically price the forest ticket and evaluate whether these pricing methods are reasonable. This study will then summarize and comprehensively study the forest ticket price formation mechanism and provide policy recommendations for decision-making departments.
Findings
The contingent valuation method and the forest ecosystem service value evaluation index method should be mainly used and given priority in the forest ticket pricing process. When the forest ticket is mainly issued for local residents' willingness to compensate for the forestry ecological value, the contingent valuation method should be mainly considered; when the forest ticket is mainly issued for compensating for the ecological value of local used forest land, the forest ecosystem service value evaluation index method should be mainly considered. The ecosystem service value based on per unit area evaluation method does not need to be the focus.
Originality/value
Compared with existing research studies, which focus more on the forest ticket system itself and the definition of forest ticket, this study mainly focuses on the forest ticket price formation mechanism, emphasizing how to form the forest ticket price and whether the forest ticket pricing methods are reasonable, which has a certain degree of innovation and research value and can partially fill the gap in related fields. At the same time, this study has certain help for the enrichment of the forest ticket system and the extension of related research studies.
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Sudipta Ramola, Rajeev Kumar Srivastava and Padma Vasudevan
The energy demand of growing population is on rise despite the fact that conventional energy reserves are limited and exhaustive in nature. To quench the ever-needing demand of…
Abstract
Purpose
The energy demand of growing population is on rise despite the fact that conventional energy reserves are limited and exhaustive in nature. To quench the ever-needing demand of energy, there is an urgent need to find out new energy options. In this regard, role of bioenergy plantation has gained enormous attention of scientist community all over the world. Biochar, a black pyrolysed carbonaceous product, is used as soil amendment and is reported to provide several benefits such as retention of nutrients in soil, better cation exchange capacity, soil carbon sequestration with better biomass yield. The paper aims to discuss these issues.
Design/methodology/approach
The present study investigated the effect of domestic waste water (grey water) as well as biochar in combination for above-ground biomass of Eucalyptus hybrid (clone 413) and Anthocephalus cadamba plantations under flooded irrigation.
Findings
Height, girth and above-ground biomass of both plantations increased significantly from control. Above-ground biomass of A. cadamba was observed to be better than Eucalyptus hybrid during initial period of establishment. After application of biochar, treatment WW+BBm was found to produce maximum above-ground biomass followed by treatment WW and WW+ BBg in both plantations system.
Originality/value
The present study encompassed a real sustainable approach for environmental management by integrating the use of waste water (source of nutrients) as well as biochar (a solid waste pyrolysed material that act as soil fertilizer, an efficient adsorbent as well as a sink for carbon sequestration) for the better biomass yield of bioenergy plantations.
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Kozue Uenishi, Keiko Tomita and Shinsuke Kido
The management of dietary phosphorus in chronic kidney disease patients is an important issue. Phosphorus is often found with protein in foods. However, excessive protein…
Abstract
Purpose
The management of dietary phosphorus in chronic kidney disease patients is an important issue. Phosphorus is often found with protein in foods. However, excessive protein restriction worsens the nutritional status of the patient; thus, phosphorus must be selectively restricted. This study aims to assess the effects of various pretreatments readily available in ordinary households on phosphorus loss in foodstuffs.
Design/methodology/approach
This study evaluated the retention of phosphorus in cooked chicken meat (boiled, baked, steamed and microwaved). In addition, this study incorporated various pretreatments (pounding, stabbing, cutting and enzymatic treatment) to the method exhibiting the lowest phosphorus retention (boiling) and assessed the effects on phosphorus retention.
Findings
Boiling (65%, vs baking, p < 0.001; vs steaming, p = 0.013; vs microwaving, p = 0.002) of the chicken meat resulted in the lowest phosphorus retention compared to the other cooking methods (baking [89%], steaming [73%] and microwaving [75%]). In addition, stabbing (58%, p = 0.009) or cutting (46%, p < 0.001) further reduced the retention of phosphorus in boiled chicken meat. The retention of phosphorus in enzyme-pretreated boiled chicken was reduced by approximately 10% compared to untreated chicken (p = 0.01). The cooking method that reduced phosphorus retention to the greatest extent was enzyme treatment prior to cutting and boiling.
Originality/value
This paper investigates the effects of common household cooking methods and combinations of methods on the phosphorus content of meat.
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Varsha Rani, Denisse E. Arends and Inge D. Brouwer
Measures of dietary diversity are relatively simple and associated with nutrient adequacy and nutritional status. The aim of this study is to validate dietary diversity score…
Abstract
Purpose
Measures of dietary diversity are relatively simple and associated with nutrient adequacy and nutritional status. The aim of this study is to validate dietary diversity score (DDS) as an indicator of nutrient adequacy of diet of Indian rural children aged five to eight years.
Design/methodology/approach
A cross‐sectional survey among 232 children (five to eight years) was conducted using a 24 h recall. Food variety score (FVS) and DDSs were calculated. Probability of adequacies of vitamin A, vitamin C, calcium, iron and zinc, and mean probability of adequacy was used to assess nutrient adequacy. To determine associations between dietary diversity and nutrient adequacy, nutrient adequacy and socio‐economic status (SES), partial rank correlations were conducted.
Findings
Vitamin C and iron had the lowest probability of adequacy (PA) while vitamin A and zinc had the highest PA. Mean probability of adequate micronutrient intake (MPA) across five micronutrients was 40 percent. Mean DDS was 6.5 and mean FVS was 12.2. DDS was significantly correlated (p < 0.01) with PA vitamin A (r = 0.17), PA vitamin C (r = 0.36) and mean MPA (r = 0.21). Correlations for FVS were significant and stronger than those of DDS with all micronutrients. Adjustments for SES indicators did not further change the correlations. The best DDS cut‐off point for nutritionally adequate diet with MPA of 75 percent was between six and seven food groups.
Originality/value
DDS and FVS can be useful tools to give a good indication of nutritional adequacy of diet in resource‐poor settings. Additionally, a DDS between six and seven should suffice to identify subjects with a nutritionally adequate diet with MPA of 75 percent with optimal sensitivity and specificity.
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