Composite blueberry purple potato black kerneled rice lactic acid beverage and preparation method thereof

Abstract

The invention discloses a composite blueberry purple potato black kerneled rice lactic acid beverage and a preparation method thereof. The beverage uses blueberry, purple potatoes and black kerneled rice as raw materials; the preparation method comprises the following steps: after performing saccharification processing on the purple potatoes and the black kerneled rice, mixing the saccharified purple potatoes, the saccharified black kerneled rice and blueberry pulp; performing lactic acid fermentation with mixed bacteria of Lactobacillus bulgaricus, streptococcus thermophilus and lactobacillus acidophilus; clarifying fermentation liquid, and after ultrafiltration, adding white sugar, honey, a citric acid and a malic acid so as to obtain the composite blueberry purple potato black kerneled rice lactic acid beverage. According to the beverage and the preparation method thereof, which are disclosed by the invention, the blueberry, the purple potatoes and the black kerneled rice are compounded, the problem that the extraction of anthocyan from single components of the purple potatoes and the black kerneled rice is unstable is solved with an organic acid in the blueberry, the anthocyan is further stabilized and further maintained through the lactic acid obtained by fermentation, the content of the lactic acid is more than 7.0g / L and the content of the anthocyan is more than 60mg / L in the obtained composite lactic acid beverage, the beverage is palatable in sour and sweet degrees and has specific fragrance generated by the fermentation of lactic acid bacteria and the fragrance of the blueberry, and the novel composite fermentation lactic acid beverage is refreshing, smooth, healthy and nutritional.

Description

technical field [0001] The invention belongs to the technical field of beverage processing, and in particular relates to a blueberry, purple potato and black rice compound lactic acid beverage and a preparation method thereof. Background technique [0002] The blueberry fruit is a small blue-purple berry, sweet and sour, with a unique flavor. It can be eaten fresh or processed. Blueberry fruit is rich in nutrients. It is a nutritious and healthy fruit with high amino acid, high zinc, high calcium, high iron, high copper and high vitamin. It has unique effects such as anti-cancer, softening blood vessels, enhancing human body immunity, and improving eyesight. In the United States and Japan, blueberries are listed as the first anti-cancer food. Because of its special health benefits, blueberries and their products are popular all over the world, and the supply is in short supply. Blueberry fruit is rich in nutrients and is one of the five healthy fruits recommended by the W...

AI Technical Summary

Problems solved by technology

For example, there are many reports on making beverages from blueberries, purple sweet potatoes, and black rice, but there are few lactic acid beverages made from blueberries, purple sweet potatoes, and black rice. There are no reports on at least two compound beverages and lactic acid beverages