Does Carob Have Iron? Examining a Common Belief
In Turkey, carob and especially carob molasses are referred to as "blood formers" or "iron stores" with a belief passed down from generation to generation. So to what extent does this belief coincide with food analysis? Is iron really found in carob, if so, how much is it, and to what extent can the body benefit from this iron?
In this article, we examine the iron content of carob together with the database and scientific study results, summarize what is known about the absorption of plant-derived iron, and explain why the phrase "blood-forming" should be used with caution.
Common Belief: "Carob Makes Blood"
In many regions of Anatolia, carob molasses is consumed together with grape and mulberry molasses as a food that is believed to give strength and be good for anemia in winter. It is part of this culture that family elders give children a spoonful of molasses for breakfast, mix it with tahini and put it on the table. Behind this habit lies the idea that molasses is generally "blood-forming".
Traditional knowledge often contains valuable observations; however, it is necessary to look at measured values to say how rich a food is in a particular nutrient. The expression "blood-forming" is also not a scientific classification. Blood production; It is a complex process that depends on many elements such as sufficient protein, folate, vitamin B12 as well as iron and the health status of the person. Therefore, it is necessary to ask the question more accurately as follows: How much iron does carob contain and where does this amount stand compared to other foods?
How much iron is in carob?
The US Department of Agriculture's FoodData Central database reports about 2.94 mg of iron per 100 grams for carob flour (USDA FoodData Central, FDC 173755). This indicates that carob contains iron; but the value itself is moderate.
A study conducted in Turkey adds an interesting dimension to this issue. The team, which also included researchers from Karadeniz Technical University, compared homemade carob powder prepared from carob obtained from southern and southwestern Turkey with commercially produced carob flour. The amount of iron in dry matter was measured as approximately 15.1 μg per gram in homemade powder and approximately 38.5 μg in commercial flour. These values correspond to approximately 1.5 mg and 3.9 mg of iron per 100 grams of dry matter (Ayaz et al., 2009).
The same study shows that the amount of iron can vary markedly depending on the processing method. The authors noted that the two crops do not come from the same harvest batch, so they cannot say the exact reason for the difference, but it is most likely due to processing differences. They also emphasized that the bioavailability of the minerals in carob flour should be investigated in the future.
Other studies on the mineral composition of carob have also shown that the fruit contains calcium, potassium, magnesium, sodium, phosphorus, copper, zinc, and iron, but iron remains at the trace element level (Özcan et al., 2007; cited in Buzzanca et al., 2025). It is reported that carob seeds may be richer in calcium, iron, magnesium, and zinc than fruit flesh (Öziyci et al., 2014; cited in Buzzanca et al., 2025).
Comparison with Cocoa and Other Foods
What makes a nutritional value meaningful is often comparison. An interesting picture emerges when looking at cocoa, the product with which carob is most frequently compared.
| Product (100 g) | Iron | Source |
|---|---|---|
| Carob flour | ~2.94 mg | USDA FDC 173755 |
| Homemade carob powder (dry matter) | ~1.5 mg | Ayaz et al., 2009 |
| Commercial carob flour (dry matter) | ~3.9 mg | Ayaz et al., 2009 |
| Unsweetened cocoa powder | ~13.9 mg | USDA FDC 169593 |
According to the table, unsweetened cocoa powder contains several times more iron per 100 grams than carob flour. This comparison shows that generalizations that carob is "more nutritious" than cocoa do not apply to every nutrient. Carob's superiority over cocoa is in other areas, such as its lack of caffeine and theobromine or its very low fat content (Loullis and Pinakoulaki, 2018).
Portion should also be taken into account. Carob flour or powder is usually used at the level of one or two teaspoons a day or a few tablespoons in a recipe. For example, 10 grams of carob flour provides about 0.3 mg of iron over USDA values. This amount is a small addition to the diet; it should not be seen as a source of iron needs alone.
Iron in Carob Molasses
Since the belief in "blood-forming" is mostly associated with molasses, it is necessary to look at carob molasses separately. Molasses is obtained by extracting and condensing the water-soluble components of the fruit. In this process, minerals also pass into the liquid; however, not all of them pass at the same rate.
In the study comparing the composition of carob fruit, flour and molasses in Turkey, it was reported that molasses was the product with the lowest values in terms of many minerals, including iron, among the products examined (Özcan et al., 2007; cited in Rodríguez-Solana et al., 2021). In the review summarizing the studies on carob syrups, it is stated that potassium is the most abundant macroelement in molasses and syrups, while copper, iron, manganese and zinc are found in smaller amounts (Rodríguez-Solana et al., 2021).
These findings do not mean that carob molasses does not contain iron. However, it shows that the main prominent component of molasses is natural sugars, while iron remains a secondary component. In the same review, it is reported that the total sugar content in carob syrups varies between 50 and 64 percent. Therefore, increasing the amount of molasses to get iron means a significant amount of sugar intake.
Vegetable Iron and the Issue of Absorption
Iron in food exists in two main forms: heme iron, which is found in animal sources such as meat, fish and chicken, and non-heme iron, which is found in plant sources. The iron in carob is non-heme iron, as in all plant foods. As it is generally accepted in nutritional science, the absorption of non-heme iron is lower than that of heme iron and is more affected by other ingredients consumed in the same meal.
Carob is a fruit rich in tannins and other polyphenols. It is known that carob fruit flesh is an important source of tannins and that the astringent taste of the fruit is largely due to these compounds (Buzzanca et al., 2025; Soares et al., 2020). It is a widely discussed topic in the nutrition literature that polyphenols can reduce the absorption of vegetable iron. We did not come across a human study directly measuring this interaction in the specific carob in the sources we examined for this article. As Ayaz et al. (2009) emphasize, the bioavailability of the minerals in carob flour, that is, how much the body can actually benefit from these minerals, is an area that has not yet been sufficiently researched.
For this reason, the iron value of carob on the label or table should not be considered exactly the same as the amount that the body will absorb.
What Should People with Iron Deficiency Do?
Iron deficiency and iron deficiency anemia are health conditions that are diagnosed by blood tests and the cause may vary from person to person. In addition to malnutrition, there may be different causes such as blood loss, absorption problems or increased need. Therefore, no food alone is a substitute for anemia treatment.
- In complaints such as weakness, paleness, fatigue, a physician should be consulted first.
- Iron therapy recommended by the physician should not be replaced with carob or molasses.
- Carob can be consumed as a small part of a varied and balanced diet.
- It is the most reliable way to determine iron-rich foods and nutrition plan together with a dietitian.
The contribution that carob can provide here is modest: As a snack or sweetener containing natural sugar, fiber and various minerals, it can make a positive contribution to nutritional quality when preferred instead of processed sugary products. However, it is not correct to highlight it with claims such as "it is good for anemia".
Balance Between Belief and Reality
The fact that carob is known as a "blood-former" is not entirely unfounded; the fruit contains iron, albeit in small amounts, and has been seen as a valuable source of energy and minerals in traditional diets. It is also known to be used as an important food source in human and animal diets during times of scarcity (Buzzanca et al., 2025). However, today's measured data reveal that carob is not a high iron content food.
| True | Carob contains iron. |
| True | The amount of iron can vary depending on the product and processing method. |
| False | Carob contains more iron than cocoa. |
| False | Carob molasses is a substitute for anemia treatment. |
| Unclear yet | How much iron in carob is absorbed by the body. |
Frequently Asked Questions
Is carob good for iron deficiency?
Carob contains a small amount of iron, but it is not considered an adequate source to eliminate iron deficiency. In iron deficiency, the treatment recommended by the physician should be taken as a basis.
Does carob molasses or carob flour contain more iron?
In a comparative study conducted in Turkey, it was reported that molasses showed lower values in terms of many minerals, including iron, compared to fruit and flour.
Does consuming carob with orange juice increase iron absorption?
It is known as general nutritional knowledge that vitamin C can support vegetable iron absorption; however, we could not find a study in which this effect was measured specifically for carob within the scope of this article.
Can children be given carob molasses for anemia?
Molasses can be part of a balanced breakfast; however, in case of suspicion of anemia, it is necessary to consult a pediatrician. The high sugar content of molasses also makes portion control important.
Getting Carob Right with Carob Türkiye
Carob; It is a valuable product of Mediterranean cuisine with its natural sweetness, fiber content, caffeine-free structure and various minerals. Getting to know it with its real nutritional values, not exaggerated health claims, is the healthiest approach for both consumers and producers.
At Carob Türkiye, we supply carob fruit, crumbs, flour/powder, seeds, and extracts. For more information about molasses What is Carob Molasses and How is it Made? Our article for our products Our Products You can review the page. For your wholesale and export requests Contact Now You can contact us on our page.
This content is for informational purposes only; it is not a substitute for medical advice.
Domestic resources
Ayaz, F. A., Torun, H., Glew, R. H., Bak, Z. D., Chuang, L. T., Presley, J. M., Andrews, R., "Nutrient Content of Carob Pod (Ceratonia siliqua L.) Flour Prepared Commercially and Domestically", Plant Foods for Human Nutrition, 64(4), 286–292, 2009. doi.
org/ 10. 1007/ S11130- 009- 0130- 3 Özcan, M. M., Arslan, D., Gökçalık, H., "Some Compositional Properties and Mineral Contents of Carob (Ceratonia siliqua) Fruit, Flour and Syrup", International Journal of Food Sciences and Nutrition, 58, 652–658, 2007. doi.
org/ 10. 1080/ 09637480701395549 Öziyci, H. R., Tetik, N., Turhan, İ., Yatmaz, E., Uçgun, K., Akgül, H., Gübbük, H., Karhan, M., "Mineral Composition of Pods and Seeds of Wild and Grafted Carob (Ceratonia siliqua L.) Fruits", Scientia Horticulturae, 167, 149–152, 2014. doi.
org/ 10. 1016/ j. Scienta. 2014. 01. 005 Foreign sources
U.S. Department of Agriculture, Agricultural Research Service, "Carob flour (FDC ID 173755)", FoodData Central – SR Legacy. FDC.
horseshoes. USDA. gov/ food- details/ 173755/ Nutrients U.S. Department of Agriculture, Agricultural Research Service, "Cocoa, dry powder, unsweetened (FDC ID 169593)", FoodData Central – SR Legacy. FDC.
horseshoes. USDA. gov/ food- details/ 169593/ Nutrients Rodríguez-Solana, R., Romano, A., Moreno-Rojas, J. M., "Carob Pulp: A Nutritional and Functional By-Product Worldwide Spread in the Formulation of Different Food Products and Beverages. A Review", Processes, 9(7), 1146, 2021. doi.
org/ 10. 3390/ pr9071146 Buzzanca, C., D'Amico, A., Pistorio, E., Di Stefano, V., Melilli, M. G., "Carob-Based Functional Beverages: Nutritional Value and Health Properties", Beverages, 11(1), 1, 2025. doi.
org/ 10. 3390/ beverages11010001 Loullis, A., Pinakoulaki, E., "Carob as Cocoa Substitute: A Review on Composition, Health Benefits and Food Applications", European Food Research and Technology, 244, 959–977, 2018. doi.
org/ 10. 1007/ S00217- 017- 3018- 8 Soares, S., Brandão, E., Guerreiro, C., Soares, S., Mateus, N., De Freitas, V., "Tannins in Food: Insights into the Molecular Perception of Astringency and Bitter Taste", Molecules, 25, 2590, 2020. doi.
Scientific Resourcesorg/ 10. 3390/ molecules25112590
