The invention discloses a production method of spina date
seed protein gel, and belongs to the technical field of
food processing, the spina date
seed protein gel is prepared by taking medicinal and edible spina date seed as a
raw material, performing
degreasing, alkali extraction and acid
precipitation to obtain spina date
seed protein isolate, and performing precursor solution preparation, compound
probiotic fermentation and post-treatment gelling. The compound
probiotic leavening agent is formed by compounding
lactobacillus bulgaricus,
streptococcus thermophilus,
lactobacillus acidophilus,
lactobacillus plantarum and
lactobacillus casei according to the equal proportion, the
inoculation amount is 0.1 g / 100 mL precursor solution, constant-temperature
fermentation is carried out at 42 DEG C for 10-20 h, and the preferable
fermentation time is 15 h. A standardized spina date seed
protein isolate extraction process is established, the screened compound
probiotic leavening agent is high in adaptability, and cooperative regulation and control of the gel water-holding capacity and strength are achieved by regulating and controlling the fermentation time; the prepared gel is in a non-transparent
solid state, does not have
dehydration shrinkage, has the water-holding capacity of more than or equal to 70%, has the
gel strength of more than or equal to 18g, has a uniform and porous three-dimensional
network structure as a
microstructure, and has excellent rheological properties; the process is green and safe, the operation is simple, industrial amplification can be realized, and the product has both
nutrition and probiotic functions, can be directly developed into products such as
plant-based yoghourt and the like, can also be applied as a food gel, realizes high-value utilization of the spina date seed resource, and has a good industrial prospect.