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5. Tomato nutritional value
Apart from its macronutrient composition water, carbohydrate, total
dietary fiber, protein and total lipid , tomato is an important source of
micronutrients, notably lycopene, ß-carotene, a-tocopherol, phenolic compounds, certain minerals notably potassium and carboxylic acids,
including ascorbic, citric, malic, fumaric and oxalic acids Victor and Ronald, 2008. The benefits of tomatoes and tomato products have been
attributed mostly to the significant amount of lycopene contained, which constitutes 80 to 90 of the total carotenoid content in tomatoes Erba,
et al
. 2013.
Tomatoes are widely consumed either raw or after processing and can provide a significant proportion of the total antioxidants in the diet. In many
countries, especially in the Countries that produce tomatoes such as China, Turkey, Egypt etc, tomatoes constitute the predominant source of lycopene
and phenols Elsayed and Amany, 2011.
6. Tomato paste processing
The demand for tomato processing usually arises from a need to preserve the product for cooking purposes out of season or to add value for extra
income. Traditionally, the most important methods used are concentration to a paste or purée and drying either fruit pieces or to a powder.
In many Countries, especially developed Countries, tomato paste processing constitutes a common method used to ensure the availability of
tomato out of season. In U.S. for example, a big part of tomato processing industry is occupied by Companies which produce tomato pastes Hayley
and Henrich, 2005. Tomato paste is made from whole processing tomatoes generally
containing between 4.5 to 6.0 percent tomato solid. With regard to solid content, the industry normally refers to TSS Total Soluble Solids, a
measure which excludes all insoluble solids. In accordance with generally accepted market standards, tomato paste must contain at least 14 percent
TSS. On average, 6kg of fresh tomatoes are required to make 1 kg of tomato perpustakaan.uns.ac.id
commit to user
11 paste 26-28 Brix. Most common tomato paste is in Concentrate 2 or double
concentrate with 26-28 Brix, but Concentrate 3 or triple concentrate with 36- 38 Brix is also present in the market. Triple concentrate is especially popular
in China where it is exported to the markets where it is diluted and resold. High density paste can save freight, and this is a major reason why TSS 36-
38 dominates China’s export oriented production Louis, 2009.
7. Project definition
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