NOVELTY - Fractionation of pulse crop comprises preprocessing pulse crop to extract edible protein concentrate from pulse crop; and generating biofuel from remaining fractions of the pulse crop.    USE - The method is for fractionating pulse crop comprising pea crop, bean crop, or lentil crop to obtain food product i.e. extruded or baked cereal, textured protein, protein concentrate, or fish or animal feed, and alcohol biofuel comprising ethanol (claimed). The method is useful for other alternative crops, such as chestnut seeds, banana and peel, taro root, and chickpeas. It is useful for producing energy products, such as methane.    ADVANTAGE - The method applies premium utilization to each fraction of pulse crop so that no fraction is treated as waste. It increases the efficiency of the entire fractionating process; and enables an ecosystem, in which pulses grow inexpensively on low-grade land or under poor conditions providing a cash crop food, energy, and chemical components. In a farm cooperative model, the pulse crop provides sustainability as participants inexpensively produce protein, ethanol, and industrial chemical components. The method provides a cost effective model for energy production. It enables pulse crops to become a viable and valuable asset (money-making crop) in many parts of the world. The method solves economic and environmental problems associated with energy crops and energy production since pulse crops do not require nitrogen or pesticides. Besides not polluting water with run-off fertilizer, pulse crops require less gasoline to produce the crop, an estimated savings of 5 gallons per acre, because tractors are not required to apply fertilizer and pesticide substances on crops. Some pulses, such as lentils can be grown on 50% of Conservation Reserve Program qualified lands netting an additional 50% profit from the amount farmers are paid to leave these lands fallow. Using the pulse-based ecosystem model: farmers are sustained by higher income per acre and increased demand; energy production of crops does not displace lands used for food production; the crops prevent erosion to a higher degree than leaving the land fallow; the crops preserve the environment by not polluting it with nitrogen and pesticides; the cost of energy is low because the production of protein concentrate and a high protein extruded cereal covers the cost of the commodity; the purified starch has high quality and low ash, and thus, converts to energy at a higher percentage; and government may save money by not having to pay farmers to leave the land fallow. The method presents a complete solution, in the sense that the ethanol production increases profits for farmers, and aims to use the entire biomass of the pulse crop, processing the whole pulse plant, e.g. stems too, into ethanol. The pulse crop becomes a sustainable, reproducible, and highly utilized product. The method can help to sustain the farmers, provides increased profit, and enables farmers to directly use their own lentils or peas to produce ethanol much more inexpensively than from corn because the pulse crops do not require the same amounts of pesticides, water, and nitrogen fertilizers that corn requires, yet can provide a higher yield. The method is more suitable than conventional methods for running as a continuous process. It provides reduced opportunity for growth of contaminating organisms in a continuous process; achieves efficient production of high concentrations of ethanol without liquefaction or saccharification stage before fermentation; can provide low concentrations of glucose and efficient fermentation; achieves efficient production of high concentrations of ethanol without liquefaction or saccharification stage before fermentation; and can provide low concentrations of glucose and efficient fermentation, where glucose is consumed rapidly by the fermenting yeast cell and low glucose levels reduce stress on the yeast, such as stress caused by osmotic inhibition and bacterial contamination pressures. Ethanol levels greater than 18 vol.% can be achieved in 45-96 hours. Since the method maintains low levels of carbohydrate throughout fermentation, even with cereal derived substrates, it is possible to distill off a fraction of the alcohol without unacceptably reducing fermentable sugar. Unfermented substrate remains in the form of insoluble solids and is recovered and recycled in the centrifuge cake stream and is not exposed to the thermal degradation conditions present in distillation. The method has emission benefits, which result in the reduction in by-products created in the ethanol manufacturing process. The concentration and emission rates of volatile organic compounds, carbon monoxide, nitric oxide compounds, sulfur oxides, and other emissions are lower.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) pulse-based ecosystem model comprising growing a pulse crop; extracting a protein portion from the pulse crop to make flour, cereal, protein concentrate, livestock feed, or fish feed; and fermenting remaining fractions of the pulse crop to make alcohol biofuel or biofuel gas; and    (2) a method comprising fractionating a pulse into a fiber fraction, a protein fraction, and a carbohydrate fraction; extracting the protein fraction from the other fractions; processing the protein fraction into a food product; and after extracting the protein fraction, processing the carbohydrate fraction into an alcohol biofuel.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating the method of fractionation of pulse crop.