The Science Behind Poha
Poha is primarily composed of carbohydrates, making it a significant energy source. A 100-gram serving of cooked poha contains approximately 76.9 grams of carbohydrates, mainly in the form of starch. This translates to roughly 350 calories per 100-gram serving, making it a moderately calorie-dense food. The carbohydrate content primarily dictates its impact on blood glucose levels.
Nutrition research indicates that poha's glycemic index (GI) ranges from 55-60. While not exceedingly high, it's important to note that the GI can vary based on the processing method and preparation style. Lightly processed poha with higher fiber content tends to have a slightly lower GI. The glycemic load (GL), which considers both the GI and the amount of carbohydrates in a serving, is around 15-18 for a standard 100-gram portion, placing it in the medium GL range.
Poha contains a modest amount of protein, approximately 3.2 grams per 100-gram serving. The protein is incomplete, lacking some essential amino acids; therefore, it is important to combine poha with other protein sources in a balanced diet.
Poha offers a small amount of fat, typically less than 0.5 grams per 100-gram serving. This makes it a naturally low-fat food. However, the fat content can increase significantly depending on the cooking method, especially if oil or ghee is used liberally.
Poha is a decent source of iron. A 100-gram serving provides around 2.6 mg of iron, contributing significantly to daily iron requirements, particularly for vegetarians. As mentioned previously, the absorption of this iron is significantly enhanced by the presence of Vitamin C.
Furthermore, poha contains trace amounts of vitamins, including Vitamin B1 (Thiamine), Vitamin B2 (Riboflavin), and Vitamin B3 (Niacin). These B vitamins play crucial roles in energy metabolism. It also provides some minerals like magnesium, phosphorus and potassium, although not in high quantities.
Clinical studies show that the digestion speed of poha is moderate. The starch in poha breaks down relatively quickly, leading to a moderate and sustained release of glucose into the bloodstream compared to refined grains like white bread. However, individuals with insulin resistance or diabetes should still exercise caution and monitor their blood sugar levels after consumption.
The metabolic impact of poha is largely driven by its carbohydrate content. It provides quick energy and can replenish glycogen stores after exercise. The iron content contributes to oxygen transport and energy production. However, the high carbohydrate content can lead to insulin spikes, particularly in individuals with impaired glucose metabolism. Adding fiber-rich vegetables like peas, carrots, and beans can help mitigate this effect by slowing down carbohydrate absorption.
