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Gibco EfficientFeed+ Supplements

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Enable fed-batch productivity through feed concentration

As fed-batch Chinese hamster ovary (CHO) cultures move toward higher cell densities, feeding volume often becomes a practical limitation in day-to-day operations. Larger additions occupy valuable bioreactor space, increase dilution, and narrow the margin for adjusting nutrient input as the run progresses. In practice, these constraints can limit how far productivity can be extended. Gibco EfficientFeed+ Supplements are designed to shift that balance by supplying nutrients at a higher concentration while remaining pH neutral. Preparing feeds at up to 3X concentration, approximately 200 g/L, reduces the volume required for each addition. This helps teams maintain working volume, manage dilution effects, and pursue higher titers within established fed-batch strategies.

Benefits of Gibco EfficientFeed+ Supplements

EfficientFeed+ Supplements support fed-batch CHO workflows by giving process teams more control over feeding volume, nutrient intensity, and bioreactor utilization without requiring changes to established media platforms.

 

Key benefits include:

  • Reducing feed-related dilution by enabling super-concentrated preparation at 1X, 2X, or up to 3X, helping preserve usable bioreactor working volume throughout the run
  • Increasing flexibility in feeding strategies by allowing nutrient input to be tailored to bioreactor constraints, culture duration, and productivity targets 
  • Simplifying preparation and handling through liquid and Advanced Granulation Technology (AGT) formats that reconstitute with water and remain pH neutral
  • Supporting higher titers in fed-batch culture by enabling increased nutrient delivery while maintaining operational control in CHO-based processes

Performance in CHO fed-batch culture

Evaluations in CHO fed-batch culture show that EfficientFeed+ Supplements maintain consistent growth and titer performance when applied within established feeding strategies. Comparative studies indicate that culture performance is maintained as teams move between formats, allowing operational considerations, such as preparation methods and handling, to be evaluated without changing expected growth or productivity outcomes. This approach becomes particularly relevant as processes move into late-stage development or scale-up preparation.

EfficientFeed+ concentrate supplement with CHO-S average growth

Figure 1. EfficientFeed+ concentrate supplement with CHO-S average growth

EfficientFeed+ concentrate supplement with CHO-S average titer

Figure 2. EfficientFeed+ concentrate supplement with CHO-S average titer

Designed for flexible fed-batch feeding strategies

EfficientFeed+ Supplements can be prepared at 1X, 2X, or 3X concentration, enabling teams to adjust feed strength and volume based on vessel size, working volume targets, and culture duration. This flexibility supports a range of bolus and intensified feeding strategies while maintaining pH neutrality and chemically defined composition. By adjusting concentration instead of feed volume alone, process developers can refine nutrient delivery as processes evolve from development through scale-up.

Maintain product quality while increasing feed intensity


Data from CHO fed-batch studies show that evaluated quality profiles remain consistent when feed concentration or feeding percentage is increased using Gibco supplements. This allows teams to intensify feeding strategies to support higher titers or extended culture duration while maintaining comparable product quality outcomes.
 

Performance across liquid and AGT formats

Evaluations in CHO fed-batch culture show that EfficientFeed+ Supplements perform comparably across liquid and Advanced Granulation Technology formats for cell growth and titer. This consistency enables teams to choose a format based on preparation workflow, handling preferences, and scale considerations. With performance held constant across formats, process developers can focus on operational fit as processes move from development into manufacturing environments.

Liquid media

Use liquid EfficientFeed+ Supplements when simplicity and rapid implementation are required. Ready-to-use formulations allow teams to integrate super-concentrated feeds into existing fed-batch workflows without additional pH adjustment.

Advanced Granulation Technology

Select the Advanced Granulation Technology dry format to enable high-concentration reconstitution using water. This approach supports preparation flexibility, reduced handling complexity, and consistent execution as fed-batch processes move toward larger-scale operation.

Applications for EfficientFeed+ Supplements

Gibco EfficientFeed+ A+, B+, and C+ are selected based on the base medium in use, CHO cell line background, and targeted productivity profile, giving teams the ability to align feeding strategies with established platforms. In practice, selection often builds on prior experience with EfficientFeed+ A+, B+, or C+ formulations and the base media already qualified in the process.

 

Table 1. Applications for EfficientFeed+ Supplements
 

EfficientFeed+ Supplement

Base media

CHO cell line

Application focus

Gibco EfficientFeed+ A+ Supplement

Gibco CD OptiCHO Medium, Gibco CD CHO Medium

CHO-K1, GS-CHO

Early to mid-stage development and moderate productivity targets

Gibco EfficientFeed+ B+ Supplement

CD CHO Medium

DG44, CHO-K1

Balanced growth and productivity in standard fed-batch workflows

Gibco EfficientFeed+ C+ Supplement

Gibco CD FortiCHO Medium, Gibco Dynamis Medium

CHO-S, high-density CHO lines

High-density culture and higher titer objectives

Discover other feeds and supplements

EfficientFeed+ Supplements fit within a broader set of Gibco feeds and supplements designed to support coordinated upstream feeding strategies. When combined with adjacent solutions, they enable teams to address nutrient delivery, productivity, and product quality objectives within a single fed-batch CHO workflow.

Gibco FunctionMAX TiterEnhancer

Gibco FunctionMAX TiterEnhancer is applied later in fed-batch culture to support sustained specific productivity as growth begins to slow. It enhances existing feeding strategies without requiring changes to base media or established feed schedules.

Gibco GlycanTune Total Feeds

Gibco GlycanTune Total Feeds can be introduced through controlled feed transitions to modulate glycan profiles in fed-batch CHO processes. This approach allows teams to influence glycosylation outcomes while maintaining continuity with established media and feeding strategies.

Explore mAb upstream solutions


Advance upstream performance by connecting feeding strategies to earlier development decisions that shape monoclonal antibody (mAb) process robustness. EfficientFeed+ Supplements fit within integrated CHO-based upstream workflows that combine cell line development, media and feed selection, and early bioreactor evaluation to address variability and support consistent scale-up.

Frequently asked questions

EfficientFeed+ Supplements should be considered when feeding volume, dilution effects, or limited bioreactor working volume begin to constrain fed-batch performance. They are particularly relevant in CHO processes where higher cell densities or extended culture duration increase nutrient demand, and adding larger feed volumes is no longer practical. Super-concentrated, pH-neutral feeds enable teams to intensify nutrient delivery while maintaining existing media platforms and feeding strategies.

Super-concentrated EfficientFeed+ Supplements helps reduce the volume required for each feed addition, helping preserve usable bioreactor working volume throughout fed-batch culture. By enabling the same nutrient input in a smaller volume, teams can limit dilution effects, maintain tighter control over culture conditions, and use available bioreactor space more efficiently. This approach supports higher nutrient intensity without changing vessel size or overall process configuration.

EfficientFeed+ Supplements are designed to integrate with established CHO media platforms and feeding strategies without requiring a process redesign. They align with commonly used Gibco media and can be introduced by adjusting feed concentration rather than changing feed timing or composition.

Data from CHO fed-batch studies show that increasing feed concentration or feeding percentage with EfficientFeed+ Supplements maintains comparable evaluated product quality attributes. Evaluations indicate that key quality profiles remain consistent as feeding intensity increases, allowing teams to pursue higher titers or extended culture duration.

When scaling EfficientFeed+ Supplements, teams should consider feed format selection, preparation workflow, and handling practices alongside bioreactor size and operating conditions. Comparable growth and titer performance across liquid and Advanced Granulation Technology formats support continuity during scale-up and tech transfer. Evaluating concentration levels, mixing times, and preparation logistics early helps maintain consistent execution as processes transition from development to manufacturing environments.

Cell culture resources


The Cell Culture Resource Hub showcases technical documents, application notes, and workflow guides to evaluate media, feed strategies, and culture conditions across development and scale-up. These resources offer practical guidance for improving consistency and understanding how different formulations perform in upstream processes.

Discuss fed-batch optimization with a specialist

For research use or further manufacturing. Not for diagnostic use or direct administration into humans or animals.