Methods of preparing highly purified steviol glycosides, particularly steviolmonoside, steviolmonoside A, steviolbioside, steviolbioside D, rubusoside, steviolbioside A, steviolbioside B, rebaudioside B, stevioside, rebaudioside G, stevioside A, stevioside B, stevioside C, rebaudioside A, rebaudioside E, rebaudioside E2, rebaudioside E4, rebaudioside E6, rebaudioside E3, rebaudioside D, rebaudioside 1, rebaudioside AM, rebaudioside D7, rebaudioside M, rebaudioside M4, rebaudioside 1a, rebaudioside 1b, rebaudioside 1c, rebaudioside 1d, rebaudioside 1e, rebaudioside 1f rebaudioside 1g, rebaudioside 1h, rebaudioside 1i, rebaudioside 1j, rebaudioside 1k, rebaudioside 1l, rebaudioside 1m, rebaudioside 1n, rebaudioside 2a and/or SvG7 are described. The methods include utilizing enzyme preparations and recombinant microorganisms for converting various staring compositions to target steviol glycosides. The highly purified steviol glycosides are useful as non-caloric sweetener, flavor enhancer, sweetness enhancer, and foaming suppressor in edible and chewable compositions such as any beverages, confectioneries, bakery products, cookies, and chewing gums.

Cellulose derivatives comprising a hydroxyethyl group, such as hydroxyethyl methyl cellulose, are used as foam control agents in foodstuff processing. The cellulose derivatives are biodegradable while still providing excellent foam control capacity. In addition, cellulose derivatives foam control agents of the disclosure can be used with various apparatus while avoiding forming films that otherwise affect apparatus function. The cellulose derivatives can be used at various stages during industrial processing of vegetables (e.g., potatoes and beets) and fruits.

The invention relates to the use of a polysiloxane having a plurality of siloxane groups and at least one tertiary amide group covalently linked as a pending and/or terminal group to the polysiloxane, as a defoaming agent in a liquid composition.

The invention relates to the use of a polysiloxane having a plurality of siloxane groups and at least one tertiary amide group covalently linked as a pending and/or terminal group to the polysiloxane, as a defoaming agent in a liquid composition.

A polyether foam control agent including a butylene-containing polyether foam control agent useful for preparing an agrochemical formulation; a water-based agrochemical formulation containing a combination of (a) at least one butylene-containing polyether foam control agent described above, (b) at least one active ingredient, and (c) water, and a process for preparing the agrochemical formulation.

A method for scavenging hydrogen sulfide from fluids produced into a well includes pressurizing a hydrogen sulfide scavenging reagent to a pressure above a pressure in the well. At selected times the pressurized hydrogen sulfide scavenging reagent is enabled to flow into the well. Fluid produced from the well is stored at a pressure extant on the well. At selected times an hydraulic connection is made between the stored, produced fluid and the well so that the produced fluid flows into the well by gravity. In some embodiments, the reagent is triazine.

The present disclosure belongs to the technical field of value-added urea preparation, and specifically relates to a two-component foam inhibitor and a preparation method thereof, and a method for reducing foaming in production of urea humate. In the present disclosure, a foam control agent in the two-component foam inhibitor lowers a pH value of a humate solution to reduce the production of ammonia in a urea melt, and can avoid condensation of the humate solution caused by lowering the pH value and a difficulty in adding the humate solution to the urea melt. A suspension adsorbent in the two-component foam inhibitor can adsorb free ammonia in the urea melt and ammonia generated after adding the humate solution. In summary, the two-component foam inhibitor can effectively reduce a foaming reaction during production of the urea humate, avoid powdering of urea humate particles, and improve a production efficiency.

The present disclosure belongs to the technical field of value-added urea preparation, and specifically relates to a two-component foam inhibitor and a preparation method thereof, and a method for reducing foaming in production of urea humate. In the present disclosure, a foam control agent in the two-component foam inhibitor lowers a pH value of a humate solution to reduce the production of ammonia in a urea melt, and can avoid condensation of the humate solution caused by lowering the pH value and a difficulty in adding the humate solution to the urea melt. A suspension adsorbent in the two-component foam inhibitor can adsorb free ammonia in the urea melt and ammonia generated after adding the humate solution. In summary, the two-component foam inhibitor can effectively reduce a foaming reaction during production of the urea humate, avoid powdering of urea humate particles, and improve a production efficiency.

The present disclosure provides methods and compositions for reducing an amount of foam in a medium. A method may include adding a composition to the medium and reducing the amount of foam in the medium. The composition may include an anti-foam composition that includes an imide-containing compound. The anti-foam composition may comprise, for example, a detacking composition, a fuel cloud point depressant, and/or a crude oil pour point depressant.