Catechin compound(s)-containing beverages having reduced bitterness and astringency of catechin compound(s) while maintaining tea-like preferable flavors, methods of production thereof, and the like are provided. The content of catechin compound(s) in a beverage is adjusted to within a certain range, the total content of RebM and RebD in the beverage is adjusted to within a certain range, and the weight ratio of the total content of RebD and RebM to the content of the catechin compound(s) is adjusted to within a certain range.

Tea polymerized polyphenol-containing beverages having reduced bitterness and astringency of tea polymerized polyphenols while maintaining tea-like preferable flavors, methods of production thereof, and the like are provided. The content of tea polymerized polyphenols in a beverage is adjusted to within a certain range, the total content of RebM and RebD in the beverage is adjusted to within a certain range, and the weight ratio of the total content of RebD and RebM to the content of the tea polymerized polyphenols is adjusted to within a certain range.

Recombinant microorganisms, plants, and plant cells are disclosed that have been engineered to express novel recombinant genes encoding steviol biosynthetic enzymes and UDP-glycosyltransferases (UGTs). Such microorganisms plants, or plant cells can produce steviol or steviol glycosides, e.g., rubusoside or Rebaudioside A, which can be used as natural sweeteners in food products and dietary supplements.

The invention relates to sweetening compositions obtained from the Luo Han Guo fruit, a member of the Cucurbiticeae family. The compositions are free of bitter-tasting impurities, have a light colour and contain about 16-75% mogroside V and about 30-95% total terpene glycosides on a dry weight basis. A filtered (0.2 m) solution of the composition in water with a solids content of 1% w/v has an absorbance at 420 nm of about 0.55 or below. Also disclosed is a method of preparing such compositions which includes a heating step to encourage the formation of melanoidins, highly coloured impurities, thereby permitting their removal by filtration providing a lighter coloured product.

Novel Stevia rebaudiana plant cultivars, a process for preparing superior compositions comprising steviol glycosides, and the advantageous use of the compositions comprising steviol glycosides in consumables, including food and beverage products, are disclosed.

A Stevia extract comprises one or more Stevia-derived non-steviol glycoside substances and/or one or more non-volatile non-steviol glycoside substances. The Stevia extract may be used as a sweetener or a flavorant in an orally consumable product.

The invention describes Stevia compositions that are devoid of or have minimal concentrations of rebaudioside C and/or dulcoside A to decrease the aftertaste associated with Stevia compositions.

Various embodiments of the present technology provide compositions and methods for a sweetener composition comprising stevia leaf extract, stevia glycosides, and/or Luo Han Guo fruit extract. The sweetener composition provides enhanced taste and/or flavor properties as compared to other non-caloric or low-caloric sweeteners. The sweetener composition has a reduced aftertaste relative to stevia leaf extract and/or purified steviol glycoside. The sweetener composition may be formulated into any edible sweetened substances.

Methods for recombinant and enzymatic production of mogroside compounds and compositions containing mogroside compounds are provided by this invention.

The purpose of the present invention is to provide a protein, said protein having an activity of synthesizing rhamnose from glucose, and a polynucleotide encoding the same. Provided are a rhamnose synthase derived from stevia and a method for producing rhamnose from glucose using a gene. Also provided is a method for producing a steviol glycoside using the rhamnose synthase derived from stevia.