scholarly journals Proximate and Nutritional Composition of Stored Bulb Onions as Affected by Harvest and Postharvest Treatments

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Irene N. Kiura ◽  
Bernard M. Gichimu ◽  
Felix Rotich

Productivity of bulb onions (Allium cepa L.) is largely constrained by postharvest losses. There are several postharvest strategies applicable to onions, but they are mostly applied singularly and therefore their combined effects have not been well studied. This study was set out to evaluate the effects of harvesting stage, curing period, and time of topping on postharvest quality of stored red bulb onions. The study was carried out in Yatta Subcounty, Machakos County, Kenya. The experimental design was split-split plot laid out in a 3 × 3 × 2 factorial arrangement. The treatments consisted of harvesting stage (25%, 50%, and 75% top fall), curing period (none, 1 week, and 2 weeks after harvesting), and time of topping (before and after curing). All the treatments were replicated three times. After 3 months of storage, the bulbs were analyzed for proximate and nutritional composition. Bulbs that were harvested at 75% top fall and cured for one or two weeks before topping retained higher moisture content, bulb weight, crude protein, vitamin C, zinc, potassium, calcium, and iron but lower sodium content after three-month storage. These practices are therefore recommended for maintaining the nutritional quality of bulb onions after harvesting.

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Irene N. Kiura ◽  
Bernard M. Gichimu ◽  
Felix Rotich

Productivity of onion (Allium cepa L.) in Kenya is constrained by postharvest losses. Most postharvest strategies applicable to onions are applied singularly, and therefore, their combined effects have not been well studied. This study evaluated the combined effects of harvesting stage, curing period, and time of topping on postharvest visual and keeping quality of red bulb onions. The study was carried out in Yatta Sub-County, Machakos County, Kenya. The experimental design was a split-split plot laid out in 3 × 3 × 2 factorial arrangement. The treatments consisted of harvesting stage (25%, 50%, and 75% top fall), curing period (none, 1 week, and 2 weeks) and time of topping (before and after curing). After three months of storage, the bulbs were assessed for visual and keeping quality using incidences of skin rots, skin colour, percent of marketable bulbs, residual weight of the bulbs after curing, and days to 50% sprouting. Bulbs that were harvested at 75% top fall and cured for one or two weeks before topping were found to have significantly better visual and keeping quality. Although seasonal variations were significant for some of the parameters assessed, a similar trend was observed in both seasons. The study recommends harvesting of onions at 75% top fall and curing for at least one week before topping for enhanced visual and keeping quality of harvested bulb onions.


Author(s):  
Aydın Altop ◽  
Emrah Güngör ◽  
Güray Erener

This study aimed to investigate the effect of solid-state fermentation on the nutritional composition of cottonseed meal (CSM), sunflower meal (SFM) and hazelnut kernel meal (HKM). In this study, each feedstuff was divided into two treatment groups (unfermented and fermented) with five replicates. Nutritional changes in the feedstuffs were determined by analyzing crude protein, ether extract, ash, crude fiber, neutral detergent fiber, acid detergent fiber contents. Solid-state fermentation had effects on the nutritional composition in all feedstuffs. The best improvement in nutritional quality was obtained from the HKM with increasing the crude protein and decreasing the structural carbohydrates content. Fermented HKM can be considered as an alternative protein feed for soybean meal considering the nutritional composition.


2021 ◽  
pp. 1-8
Author(s):  
Julie Perron ◽  
Sonia Pomerleau ◽  
Pierre Gagnon ◽  
Joséane Gilbert-Moreau ◽  
Simone Lemieux ◽  
...  

Abstract Objective: The Food Quality Observatory was created in the province of Quebec (Canada) in 2016. In this study, the Observatory aimed to generate a methodology to (1) test the use of sales data combined with nutrient values to characterise the nutritional composition of ready-to-eat (RTE) breakfast cereals offered and purchased in the province of Quebec (Canada) and (2) verify the extent to which a front-of-pack label based on the percentage of daily value (DV) for total sugar, as a strategy to improve the food supply, would be distributed in this food category. Design: Nutritional information were obtained by purchasing each RTE breakfast cereal available in the Greater Montreal area. Cereals were then classified according to their processing type. Setting: The nutritional values of 331 RTE breakfast cereals available in Quebec were merged with sales data covering the period between May 2016 and May 2017. A total of 306 products were successfully cross-referenced. Results: Granola and sweetened cereals were the most available (36·6 % and 19·6 %, respectively) and purchased (19·8 % and 40·9 % of sales, respectively). When compared with other types of cereals, granola cereals had a higher energy, fat, saturated fat, protein content and a lower Na content. A larger proportion of chocolate (65 %) and sweetened cereals (49 %) were above 15 % of the DV for sugar. Conclusions: This study showed that the methodology developed generates important data to monitor nutritional quality of the food supply and ultimately contribute to improve the nutritional quality of processed foods.


2007 ◽  
Vol 10 (7) ◽  
pp. 690-700 ◽  
Author(s):  
E Labouze ◽  
C Goffi ◽  
L Moulay ◽  
V Azaïs-Braesco

AbstractBackground/objectivesWith obesity and nutrition-related diseases rising, public health authorities have recently insisted nutritional quality be included when advertising and labelling food. The concept of nutritional quality is, however, difficult to define. In this paper we present an innovative, science-based nutrient profiling system, Nutrimap®, which quantifies nutritional assets and weaknesses of foods.MethodsThe position of a food is defined according to its nutritional composition, food category, the consumer's nutritional needs, consumption data and major public health objectives for nutrition. Amounts of each of 15 relevant nutrients (in 100 kcal) are scored according to their ability to ‘rebalance’ or ‘unbalance’ the supply in the whole diet, compared with current recommendations and intakes. These scores are weighted differently in different food categories according to the measured relevance of the category to a nutrient's supply. Positive (assets) and negative (weaknesses) scores are totalled separately.ResultsNutrimap®provides an overall estimate of the nutritional quality of same-category foods, enabling easy comparisons as exemplified for cereals and fruit/vegetables. Results are consistent with major nutritional recommendations and match classifications provided by other systems. Simulations for breakfasts show that Nutrimap®can help design meals of controlled nutritional value.ConclusionsCombining objective scientific bases with pragmatic concerns, Nutrimap®appears to be effective in comparing food items. Decision-makers can set their own limits within the Nutrimap®-defined assets and weaknesses of foods and reach categorisations consistent with their objectives – from regulatory purposes to consumer information or support for designing meals (catering) or new products (food industry).


2020 ◽  
Vol 79 (OCE2) ◽  
Author(s):  
Asha Kaur ◽  
Peter Scarborough ◽  
Mike Rayner

AbstractHealth-related claims (HRCs) are statements found on food packets that convey the nutritional quality of a food (nutrition claims) and/or its impact on a health outcome (health claims). Foods carrying HRCs have a slightly improved nutritional profile than foods without HRCs, however, it's unclear whether this translates into dietary improvements. We conducted a modelling study to measure the effect of HRCs on diet. As HRCs are already present on foods it is assumed that any impact that they have upon diet are already in effect. We modelled the impact on food purchases of removing HRCs, by assuming that the sales boost they receive is neutralised. These results can be inverted to estimate the current dietary impact of HRCs. Using the Living Costs Food (LCF) survey data, we calculate the average purchases and nutrient intake per person, per day. The LCF data is divided into sales of products with HRCs and sales of products without HRCs through solving mathematical equations combining LCF sales data with odds ratios from a meta-analysis examining the impact of HRCs on choices and data from a survey of foods examining the prevalence of HRCs and the nutritional quality of foods that carry them so that the sum of the sales of products with HRCs and without HRCs is equal to the total sales of products. Similarly, mathematical equations are solved that combine nutritional composition data with the sales of foods carrying and not carrying HRCs. In the baseline scenario foods carrying HRCs made-up 37% of the total purchases, and contributed 29% (559kcal) of the total kcals purchased (1907kcal). When HRCs are removed from foods there is an average increase of 18kcal/d (95% Uncertainty Intervals [UI] -15, 52), + 2g/d increase in total fat (95% UI -1, 4) and saturated fat (95% UI 1, 3), smaller changes are seen for protein (+ 0.5g/d, 95% UI -1, 2), total sugar (+ 0.5g/d, 95% UI -4, 7) and carbohydrate (-0.5g/d, 95% UI -5, 7). There is reduction in the amount of fruit (-11g/d, 95% UI -34, 26) but an increase in vegetables (+ 6g/d, 95% UI -6, 19). These results should be interpreted with caution due to the large uncertainty intervals. When HRCs are removed, we see a small deterioration in the quality of the average diet. If we invert these findings we can assume HRCs currently have a positive, albeit small, impact on diet.


2018 ◽  
Vol 7 (4) ◽  
pp. 120
Author(s):  
Seema Sonkar ◽  
Shraddha Yadav ◽  
Rishi Bhel ◽  
O. P. Bishnoi

Triticale is a more recent development in the field of cereals, that is a man made cereals created by crossing wheat and rye, compared to oats and barley, which have long histories, triticale is between 40 and 50 years old. Triticale is hybrid of wheat (Triticum) and rye (Scale) first bread in laboratories during the late 19th century in Scotland and Germany. When crossing wheat and rye, wheat is used the female parent and rye is the male parent. The resulting hybrid is sterile and must be treated with colchicines to induce polyoidy and thus the ability to reproduce itself. High quality grain, conditioning products with desirable properties and nutritional value, determines the use of triticale for consumption. Therefore, more and more attention is paid in triticale breeding for its quality, to obtain highly yielding, but also technologically advantageous varieties. The aim of this research was to evaluate nutritional quality and sensory properties of triticale based product that are – Medicated Health Powder which are made from germinated grain triticale, wheat, pearl millet, Beet root ashwagandha, safed musli and steavia powder and Non– Medicated Health Powder which are made from germinated grain triticale, wheat, pearl millet, and steavia powder. The result of the nutritional analysis indicated that the nutritional composition of Medicated health powder are moisture -8.5, ash -2.20, protein- 6.59 and iron-1.82 gm. Non-Medicated health powder are moisture -8.7, ash -1.89, protein- 6.36 and iron-1.71 gm. Regarding sensory properties, these products were evaluated on sensory parameters using nine point hedonic rating scale. Sensory score for Medicated Health Powder for appearance 9.0, texture 8.4 color 8.2, flavor 8.0 and overall acceptability is 9.0. and Non-Medicated Health Powder for appearance 9.0, texture 8.8 color 8.4, flavor 8.8 and overall acceptability is 9.0. A sensory quality of products (Medicated health powder and Non- medicated health powder) was monitored during storage and was found stable for 3 months. Medicated and Non- medicated health powder health powder is recommended for diabetic patients and in cronic heart disease.


Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 831 ◽  
Author(s):  
Paula Monllor ◽  
Gema Romero ◽  
Raquel Muelas ◽  
Carlos A. Sandoval-Castro ◽  
Esther Sendra ◽  
...  

Wastes from artichoke and broccoli crops and cannery industries represent an environmental problem. A viable option to this problem is ensiling them for use as ruminants feed. The aim of this study was to characterise the ensiling process of broccoli and artichoke by-products and assess their suitability to be part of the ruminant diet, as well their minimum shelf life. Twenty-one commercial round bale silos (300 kg and 0.64 m3) of each by-product were made. Samples were analysed at days 0, 7, 15, 30, 60, and 200 to determine microbial populations, fermentation metabolites, nutritional components, and phytosanitary residues. Feedstuffs showed good suitability for ensiling, and stabilisation was achieved on day 30. The variables with the greatest significant differences among sampling times were microbial populations and fermentative components. There were no important dry matter losses, and some significant differences were observed in the nutritional composition, especially in crude protein and fibrous fractions, but they were not relevant for the loss of nutritional quality of silages. The phytosanitary residues determined on day 200 were below the maximum residue limits set by European legislation. So, ensiling these by-products in commercial round bale silos is a suitable and profitable technique that allows their preservation for a long time (200 days).


HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 504D-504 ◽  
Author(s):  
Robert C. Ebel ◽  
Floyd M. Woods ◽  
Dave Himelrick

Brown rot of peaches is one of the most devastating diseases that can occur before and after harvest. There has been extensive research that has shown that ultraviolet light (UV-C) kills the fungus that causes brown rot. However, it is has not been determined whether UV-C will also change ripening and fruit quality. We applied UV-C to `Loring' peaches that were harvested 10 days before normal harvest. We intentionally picked the fruit early because we wanted to make sure the fruit had not entered the climacteric. The fruit were treated with UV-C and ethylene, skin color, firmness, and soluble solids were measured. We also held fruit at three storage temperatures to determine whether there may be an interaction between UV-C treatment and storage temperature. Ethylene was slightly higher for UV-C treated fruit at 70 °F (20 °C) and 55 °F (12 °C), but not at 40 °F (4 °C). However, there was very little effect on firmness and soluble solids. There was a slight delay in development of red blush. UV-C had little effect on ripening and peach fruit quality.


Nutrients ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 3291
Author(s):  
Ujué Fresán ◽  
Holly Rippin

Plant-based cheese is one of the most increasingly consumed dairy alternatives. Evidence is lacking on their nutritional quality. We aimed to evaluate the nutritional composition of the plant-based cheese options available in Spanish supermarkets, and how they compare with dairy cheese. An audit of plant-based cheese alternatives has been conducted in seven of the most common supermarkets. For each product, the nutritional content per 100 g and ingredients were collected. Data on generic dairy cheese were retrieved from the BEDCA website. Descriptive statistics (median, minimum and maximum) were used to characterize the plant-based cheese products, for both all the products and grouped by main ingredients (i.e., coconut oil, cashew nuts and tofu). Mann–Whitney U tests were used for comparisons between dairy and different types of plant-based cheese. The coconut oil-based products (the large majority of plant-based cheese products, n = 34) could not be considered as healthy foods. Their major ingredients were refined coconut oil and starches and were high in saturated fats and salt. The other smaller groups, cashew nut- (n = 4) and tofu-based (n = 2), showed a healthier nutritional profile. Replacing dairy cheese with these groups could be nutritionally beneficial. Future investigations should address the health effects of substituting dairy cheese with these products.


Sign in / Sign up

Export Citation Format

Share Document