|Analysis of Food-based Antioxidants|
|Some economical sources of antioxidants|
| Shopping basket
of 63 items in
Apples-Golden Delicious (178)
Brazil nuts (14)
Bread-whole grain (109)
Carrots (organic) (136)
Chili powder (142)
Cocoa powder (640)
Curry powder (475)
Kidney beans (1028)
Lettuce (iceberg) (15)
Mustard powder (287)
Pine nuts (4)
Tomato (baby plum) (10)
|The prices of the shopping basket on the left will be monitored online from a local supermarket's website.
The most economic way to buy total antioxidants will be calculated using the total antioxidant capacities (TAC) for each product given on the Total antioxidants of foods page. The number of TAC units that can be bought for 1 penny (sterling) at each season of the year will be reported. The figures in brackets are the TAC units that could have been bought for 1p during the summer of 2007. The best buys were the herbs and spices, cinnamon e.g. providing 2368 units of antioxidants for 1p. However, in terms of an "eatable" amount of food, the 1028 TAC units from one pennyworth of kidney beans is still the best buy. The daily requirement is around 4000 TAC units. For the Spring 2008 prices go to >>>> SpringTACs . To see how food price rises are affecting the value of total antioxidants compare these values with the Winter 2008 prices at >>>> WinterTACs.
Prices of offers available for a limited time, and multi-buy offers are not used. The standard quality produce is chosen wherever possible. This means that bargains may be had, but you may only get what you pay for because, generally, the higher the quality of the food the more TAC units it will contain.
Value for money depends on:-
1. Location - kidney beans and potatoes are cheap to buy in UK
2. Season - strawberries are more expensive out of season in January
3. Quality - generally, the fresher the product the higher the TAC value will be.
But, there are exceptions where the antioxidants are difficult to extract from the fresh texture, and then the effect of aging may help to release them, e.g., the carotenoids.
4. Assumption - that all TAC units from all sources are equivalent. Discussion
Imported foods may be less environmentally friendly. Generally speaking, it is better for the planet to buy locally grown produce. 1 TAC unit from broccoli will cost the same as 1 TAC unit from pistachios, but in the UK, broccoli normally will have a smaller carbon footprint. However, you may much prefer to eat your TACs as pistachios.
Lemons provide a valuable source of vitamin C and hesperidin, a flavanone glycoside antioxidant.
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