Combining Low Price, Low Climate Impact and High Nutritional Value in One Shopping Basket through Diet Optimization by Linear Programming

Achieving nutritional requirements for pregnant women in rural or suburban households while maintaining the intake of local and culture-specific foods can be difficult. Usage of a linear programming approach can effectively generate diet optimization models that incorporate local and culturally acceptable menus. This study aimed to determine whether a realistic and affordable diet that achieves recommended nutrient intakes for pregnant women could be formulated from locally available foods in Malaysia. A cross-sectional study was conducted to assess the dietary intake of 78 pregnant women using a 24-h dietary recall and a 3-day food record. A market survey was also carried out to estimate the cost of raw foods that are frequently consumed. All linear programming analyses were done using Excel Solver to generate optimal dietary patterns. Our findings showed that the menus designed from diet optimization models using locally available foods would improve dietary adequacy for the seven food groups based on the Malaysian Dietary Guidelines 2010 (MDG 2010) and the 14 nutrients based on Recommended Nutrient Intake 2017 (RNI 2017) in pregnant women. However, inadequacies remained for iron and niacin, indicating that these nutrients may require supplementation.

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Methods of cattle diet based on nutritional value of feed components

Mehanization and electrification of agricultural ◽

10.37204/0131-2189-2019-10-10 ◽

2019 ◽

pp. 110-116

Author(s):

D. Milko ◽

D. Zhuravel ◽

G. Pedchenco ◽

V. Kuzmenko

Keyword(s):

Mathematical Model ◽

Linear Programming ◽

High Performance ◽

Dry Matter ◽

Nutritional Value ◽

Nutrient Balance ◽

Neutral Detergent Fiber ◽

Life Balance ◽

Number Of Components ◽

Animal Activity

Purpose. Development of an economic-mathematical model and calculation of the optimal ration of feeding high-performance cows in the stall period, taking into account the capacity of energy, protein and dry matter. Methods. Methods of mathematical statistics and linear programming, higher mathematics, and probability theory were used. Results. A mathematical model has been developed to determine the required number of components of a diet, which makes it possible to calculate the diet in accordance with recent studies, taking into account the number of components available in the farm. Conclusions. Ensuring nutrient balance for cattle ensures the proper functioning of animals, with a normal distribution of energy between the costs of animal activity, development and milk production. Therefore, to ensure a life balance when drawing up the diet, attention should be paid to the dry matter, protein, lactation energy and the content of neutral detergent fiber. Keywords: diet, nutrients, nutrient balance, linear programming, cost of diet.

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Diet optimization using linear programming to develop low cost cancer prevention food plan for selected adults in Kuala Lumpur, Malaysia

BMC Public Health ◽

10.1186/s12889-019-6872-4 ◽

2019 ◽

Vol 19 (S4) ◽

Cited By ~ 2

Author(s):

Reham Alaini ◽

Roslee Rajikan ◽

Siti Masitah Elias

Keyword(s):

Linear Programming ◽

Cancer Prevention ◽

Low Cost ◽

Kuala Lumpur ◽

Diet Optimization

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Optimizing School Food Supply: Integrating Environmental, Health, Economic, and Cultural Dimensions of Diet Sustainability with Linear Programming

10.20944/preprints201903.0178.v2 ◽

2019 ◽

Author(s):

Patricia Eustachio Colombo ◽

Emma Patterson ◽

Liselotte Schäfer Elinder ◽

Anna Karin Lindroos ◽

Ulf Sonesson ◽

...

Keyword(s):

Linear Programming ◽

Food Supply ◽

Lower Cost ◽

Climate Impact ◽

Cultural Dimensions ◽

School Food ◽

Supply Model ◽

One Year ◽

Value Model ◽

Swedish School

Minimizing greenhouse gas emissions (GHGE) from public sector meals harbours considerable potential to reduce climate impact. This paper aimed at finding the best possible strategy for reducing GHGE in the Swedish school food supply without compromising its nutritional adequacy, affordability, and cultural acceptability. Prices, amounts, and GHGE of all foods and drinks supplied to three schools over one year were optimized by linear programming. Three models were developed: Model 1 minimized GHGE while constraining relative deviation (RD) from observed food supply; Model 2 minimized total RD while imposing stepwise GHGE reductions; and Model 3 additionally constrained RD to -75% and +200% of the observed value. Model 1 reduced GHGE by 89-95% with an average RD (ARD) from observed food supply of 480-887%. In Model 2, comparable GHGE reductions (80%-95%) at lower ARD (78%-459%) were achieved but with high RDs for individual foods. Model 3 excluded no foods, avoided high RDs, and reduced GHGE by 40% in all schools with ARDs of 7.2-8.1% at 12-15% lower cost. An omnivorous, nutritionally adequate, and affordable school food supply with considerably lower GHGE is achievable with moderate changes to the observed food supply. This method can also be applied in other settings and countries.

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Food Dishes for Sustainable Development: A Swedish Food Retail Perspective

Foods ◽

10.3390/foods10050932 ◽

2021 ◽

Vol 10 (5) ◽

pp. 932

Author(s):

Linn Torstensson ◽

Rebecca Johansson ◽

Cecilia Mark-Herbert

Keyword(s):

Food Consumption ◽

Portfolio Management ◽

Nutritional Value ◽

Saturated Fat ◽

Climate Impact ◽

Sustainable Food ◽

Home Setting ◽

Nutritional Guidelines ◽

Single Meal ◽

Prepared Food

Current dietary patterns contribute negatively to greenhouse gas emissions and to the increased prevalence of non-communicable diseases. Earlier research on sustainable food consumption mainly focuses on diets, rather than single meals. Diets are difficult to measure, which is usually executed through self-reporting. This paper aims to identify frequently prepared dishes in a home setting through sales statistics, and how they can be altered to reduce climate impact and increase nutritional value. Commonly prepared food dishes in a home setting among customers of a major food retailer in Sweden were identified through sales statistics. The dishes were altered to reach nutritional and climate impact guidelines. Commonly prepared food dishes exceeded goals for climate boundaries by more than threefold and were not in line with nutritional guidelines. The content of fat, including saturated fat, was too high. Vegetables, fruits, wholegrains and fiber need to be increased. To reduce climate impact and increase nutritional value, the amount of animal-based product need to be reduced and/or exchanged to plant-based alternatives. This research contributes empirically to understandings of how portfolio management decisions influence food consumption based on sales statistics and how nutritional and climate impact guidelines can be applied from a single meal perspective.

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